{"id":"CVE-2026-19931","aliases":["ALPINE-CVE-2026-19931","AZL-99752","AZL-99777","AZL-99792","AZL-99819","AZL-99843","AZL-99870","BELL-CVE-2026-19931","CURL-CVE-2026-19931","DEBIAN-CVE-2026-19931","EUVD-2026-72166","GHSA-rhw6-3rrg-mwjq","MGASA-2026-0515","OESA-2026-4124","OESA-2026-4125","OESA-2026-4126","OESA-2026-4127","OESA-2026-4128","RHSA-2026:63161","RHSA-2026:63514","ROOT-OS-ALPINE-315-CVE-2026-19931","ROOT-OS-ALPINE-317-CVE-2026-19931","ROOT-OS-ALPINE-320-CVE-2026-19931","ROOT-OS-ALPINE-321-CVE-2026-19931","ROOT-OS-ALPINE-322-CVE-2026-19931","ROOT-OS-DEBIAN-12-CVE-2026-19931","ROOT-OS-DEBIAN-13-CVE-2026-19931","SUSE-SU-2026:4954-1","SUSE-SU-2026:5068-1","SUSE-SU-2026:5069-1","SUSE-SU-2026:5071-1","UBUNTU-CVE-2026-19931","openSUSE-SU-2026:11696-1"],"status":"published","title":"Negotiate ambient user conn reuse","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00747,"percentile":0.55191,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-488"],"published":"2026-09-02T08:00:00Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Alpine:v3.23","package":"curl","fixed_in":["8.22.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"curl","fixed_in":["8.22.0-r0"],"sources":["osv"]},{"ecosystem":"Azure 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},{"url":"https://www.suse.com/security/cve/CVE-2026-86411","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-86412","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-86413","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-87861","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-94265","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-9546","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20265069-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20265071-1/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-8458","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-19931","tags":["report"]},{"url":"https://github.com/curl/curl/commit/7103a93b05bc69ea98ed9d","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-13608","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-80229","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-80230","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-19931","title":"Negotiate ambient user conn reuse","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T17:47:43.523Z","modified":"2026-09-15T06:02:51.009Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-488","CWE-488"],"updated_at":"2026-11-02T13:47:17.512524Z"}],"euvd":[{"id":"EUVD-2026-72166","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T17:47:43Z","modified":"2026-09-15T06:02:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T17:28:19.01786Z"}],"ghsa":[{"id":"GHSA-rhw6-3rrg-mwjq","title":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using...","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:34:39Z","modified":"2026-09-08T18:32:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-488"],"updated_at":"2026-11-02T15:11:31.116638Z"}],"nvd":[{"id":"CVE-2026-19931","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20.733Z","modified":"2026-09-15T07:16:27.29Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-488"],"updated_at":"2026-11-02T14:12:44.082631Z"}],"osv":[{"id":"ALPINE-CVE-2026-19931","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20.733Z","modified":"2026-10-01T02:17:49.198700936Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:27:50.269992Z"},{"id":"BELL-CVE-2026-19931","status":"published","published":"2026-09-04T06:05:07.186126Z","modified":"2026-09-10T07:15:06.234559721Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"CVE-2026-19931","title":"Negotiate ambient user conn reuse","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T17:47:43.523Z","modified":"2026-11-03T22:56:57.264089772Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-488"],"updated_at":"2026-11-03T23:33:38.492822Z"},{"id":"DEBIAN-CVE-2026-19931","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.","status":"published","published":"2026-09-06T18:17:20.733Z","modified":"2026-10-01T03:03:19.732575577Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:53.097669Z"},{"id":"OESA-2026-4124","title":"curl security update","description":"cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\n\nSuccessfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Authorization:` header field meant for `hostA`,\nto `hostB`.(CVE-2026-11856)\n\nA flaw in libcurl\u0026apos;s handling of HTTP/2 Server Push streams, when the parent\nhandle is set to share connections with other handles, can lead to\nuse-after-free in the cleanup process.(CVE-2026-18924)\n\nA flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B\u0026apos;s request get sent over user A\u0026apos;s\npreviously authenticated connection.(CVE-2026-19931)\n\nWhen `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable\nstandard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and\n`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on\nconnections established without a presented server certificate. Bypassing the\npinning check under these disabled-verification conditions allows\nunauthenticated connections to succeed when they should be rejected.(CVE-2026-80230)\n\nA flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup\nfor a given hostname even when using a different Native CA Store setting\n(`CURLSSLOPT_NATIVE_CA`) than when the connection was created.(CVE-2026-80231)\n\nWhen libpsl support is enabled, libcurl fails to enforce the Public Suffix\nList boundary check when processing a `Set-Cookie` header where the `Domain`\nattribute explicitly matches an origin host that is itself a public suffix\n(e.g., `Domain=co.uk` set by `co.uk`).\n\nInstead of coercing it into a strict host-only cookie, libcurl saves the\ncookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is\ninappropriately included in subsequent outbound requests or HTTP redirects to\narbitrary sibling subdomains under the same public suffix (e.g.,\n`attacker.co.uk`).(CVE-2026-82209)","status":"published","published":"2026-09-25T01:28:45Z","modified":"2026-09-25T01:45:14.616534315Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4125","title":"curl security update","description":"cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\n\nSuccessfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Authorization:` header field meant for `hostA`,\nto `hostB`.(CVE-2026-11856)\n\nA flaw in libcurl\u0026apos;s handling of HTTP/2 Server Push streams, when the parent\nhandle is set to share connections with other handles, can lead to\nuse-after-free in the cleanup process.(CVE-2026-18924)\n\nA flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B\u0026apos;s request get sent over user A\u0026apos;s\npreviously authenticated connection.(CVE-2026-19931)\n\nWhen `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable\nstandard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and\n`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on\nconnections established without a presented server certificate. Bypassing the\npinning check under these disabled-verification conditions allows\nunauthenticated connections to succeed when they should be rejected.(CVE-2026-80230)\n\nA flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup\nfor a given hostname even when using a different Native CA Store setting\n(`CURLSSLOPT_NATIVE_CA`) than when the connection was created.(CVE-2026-80231)\n\nWhen libpsl support is enabled, libcurl fails to enforce the Public Suffix\nList boundary check when processing a `Set-Cookie` header where the `Domain`\nattribute explicitly matches an origin host that is itself a public suffix\n(e.g., `Domain=co.uk` set by `co.uk`).\n\nInstead of coercing it into a strict host-only cookie, libcurl saves the\ncookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is\ninappropriately included in subsequent outbound requests or HTTP redirects to\narbitrary sibling subdomains under the same public suffix (e.g.,\n`attacker.co.uk`).(CVE-2026-82209)","status":"published","published":"2026-09-25T01:28:45Z","modified":"2026-09-25T01:45:09.204392978Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4126","title":"curl security update","description":"cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\n\nSuccessfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Authorization:` header field meant for `hostA`,\nto `hostB`.(CVE-2026-11856)\n\nA flaw in the libcurl SASL negotiation for LDAP authentication allows an\nincomplete handshake sequence to be misinterpreted as a successful\ncryptographic verification. An attacker executing a Man-in-the-Middle (MITM)\nattack can inject a premature or shortcut response that bypasses complete peer\nvalidation.(CVE-2026-13608)\n\nA flaw in libcurl\u0026apos;s handling of HTTP/2 Server Push streams, when the parent\nhandle is set to share connections with other handles, can lead to\nuse-after-free in the cleanup process.(CVE-2026-18924)\n\nA flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B\u0026apos;s request get sent over user A\u0026apos;s\npreviously authenticated connection.(CVE-2026-19931)\n\nWhen `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable\nstandard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and\n`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on\nconnections established without a presented server certificate. Bypassing the\npinning check under these disabled-verification conditions allows\nunauthenticated connections to succeed when they should be rejected.(CVE-2026-80230)\n\nA flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup\nfor a given hostname even when using a different Native CA Store setting\n(`CURLSSLOPT_NATIVE_CA`) than when the connection was created.(CVE-2026-80231)\n\nWhen libpsl support is enabled, libcurl fails to enforce the Public Suffix\nList boundary check when processing a `Set-Cookie` header where the `Domain`\nattribute explicitly matches an origin host that is itself a public suffix\n(e.g., `Domain=co.uk` set by `co.uk`).\n\nInstead of coercing it into a strict host-only cookie, libcurl saves the\ncookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is\ninappropriately included in subsequent outbound requests or HTTP redirects to\narbitrary sibling subdomains under the same public suffix (e.g.,\n`attacker.co.uk`).(CVE-2026-82209)","status":"published","published":"2026-09-25T01:28:47Z","modified":"2026-09-25T01:45:13.706912325Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4127","title":"curl security update","description":"cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\n\nSuccessfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Authorization:` header field meant for `hostA`,\nto `hostB`.(CVE-2026-11856)\n\nA flaw in the libcurl SASL negotiation for LDAP authentication allows an\nincomplete handshake sequence to be misinterpreted as a successful\ncryptographic verification. An attacker executing a Man-in-the-Middle (MITM)\nattack can inject a premature or shortcut response that bypasses complete peer\nvalidation.(CVE-2026-13608)\n\nA flaw in libcurl\u0026apos;s handling of HTTP/2 Server Push streams, when the parent\nhandle is set to share connections with other handles, can lead to\nuse-after-free in the cleanup process.(CVE-2026-18924)\n\nA flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B\u0026apos;s request get sent over user A\u0026apos;s\npreviously authenticated connection.(CVE-2026-19931)\n\nWhen `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable\nstandard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and\n`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on\nconnections established without a presented server certificate. Bypassing the\npinning check under these disabled-verification conditions allows\nunauthenticated connections to succeed when they should be rejected.(CVE-2026-80230)\n\nA flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup\nfor a given hostname even when using a different Native CA Store setting\n(`CURLSSLOPT_NATIVE_CA`) than when the connection was created.(CVE-2026-80231)\n\nWhen libpsl support is enabled, libcurl fails to enforce the Public Suffix\nList boundary check when processing a `Set-Cookie` header where the `Domain`\nattribute explicitly matches an origin host that is itself a public suffix\n(e.g., `Domain=co.uk` set by `co.uk`).\n\nInstead of coercing it into a strict host-only cookie, libcurl saves the\ncookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is\ninappropriately included in subsequent outbound requests or HTTP redirects to\narbitrary sibling subdomains under the same public suffix (e.g.,\n`attacker.co.uk`).(CVE-2026-82209)","status":"published","published":"2026-09-25T01:28:47Z","modified":"2026-09-25T01:45:14.613657768Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4128","title":"curl security update","description":"cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\n\nSuccessfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Authorization:` header field meant for `hostA`,\nto `hostB`.(CVE-2026-11856)\n\nA flaw in the libcurl SASL negotiation for LDAP authentication allows an\nincomplete handshake sequence to be misinterpreted as a successful\ncryptographic verification. An attacker executing a Man-in-the-Middle (MITM)\nattack can inject a premature or shortcut response that bypasses complete peer\nvalidation.(CVE-2026-13608)\n\nA flaw in libcurl\u0026apos;s handling of HTTP/2 Server Push streams, when the parent\nhandle is set to share connections with other handles, can lead to\nuse-after-free in the cleanup process.(CVE-2026-18924)\n\nA flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B\u0026apos;s request get sent over user A\u0026apos;s\npreviously authenticated connection.(CVE-2026-19931)\n\nWhen `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable\nstandard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and\n`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on\nconnections established without a presented server certificate. Bypassing the\npinning check under these disabled-verification conditions allows\nunauthenticated connections to succeed when they should be rejected.(CVE-2026-80230)\n\nA flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup\nfor a given hostname even when using a different Native CA Store setting\n(`CURLSSLOPT_NATIVE_CA`) than when the connection was created.(CVE-2026-80231)\n\nWhen libpsl support is enabled, libcurl fails to enforce the Public Suffix\nList boundary check when processing a `Set-Cookie` header where the `Domain`\nattribute explicitly matches an origin host that is itself a public suffix\n(e.g., `Domain=co.uk` set by `co.uk`).\n\nInstead of coercing it into a strict host-only cookie, libcurl saves the\ncookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is\ninappropriately included in subsequent outbound requests or HTTP redirects to\narbitrary sibling subdomains under the same public suffix (e.g.,\n`attacker.co.uk`).(CVE-2026-82209)","status":"published","published":"2026-09-25T01:28:47Z","modified":"2026-09-25T01:45:14.618674629Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"RHSA-2026:63161","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-09-22T10:17:20Z","modified":"2026-10-20T10:43:35.797896375Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:63514","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-09-22T10:17:27Z","modified":"2026-09-23T10:13:27Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"UBUNTU-CVE-2026-19931","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.","status":"withdrawn","published":"2026-09-06T18:17:00Z","modified":"2026-09-26T04:30:03.25907318Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:01.334185Z"},{"id":"AZL-99752","title":"CVE-2026-19931 affecting package curl for versions less than 8.11.1-12","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.480138Z"},{"id":"AZL-99777","title":"CVE-2026-19931 affecting package cmake 3.30.3-15","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-09-08T12:42:32.305157Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99792","title":"CVE-2026-19931 affecting package mysql 8.0.46-1","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-09-08T12:40:33.887889Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99819","title":"CVE-2026-19931 affecting package rust 1.75.0-30","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-09-08T12:41:17.979701Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99843","title":"CVE-2026-19931 affecting package rust 1.90.0-10","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-09-08T12:40:48.762374Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99870","title":"CVE-2026-19931 affecting package tensorflow 2.16.1-11","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-06T18:17:20Z","modified":"2026-09-08T12:39:46.032249Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"CURL-CVE-2026-19931","title":"Negotiate ambient user conn reuse","description":"A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given\nhostname using Negotiate authentication, when the initial request is done\nusing empty credentials. This can make user B's request get sent over user A's\npreviously authenticated connection.","status":"published","published":"2026-09-02T08:00:00Z","modified":"2026-10-25T01:05:44.623863757Z","updated_at":"2026-11-02T15:43:55.998148Z"},{"id":"MGASA-2026-0515","title":"Updated curl package fixes security vulnerabilities","description":"curl 8.23.0 has been released. It fixes 24 CVEs since 8.22.0, listed at\nhttps://curl.se/docs/security.html\nNot all of theses CVEs affect Mageia. Of the ones fixed in 8.23.0, these\nare the ones that do:\nCVE-2026-86410: redirect to SFTP or SCP bypasses host verification\nCVE-2026-86412: server-set cookie erases cookie jar\nCVE-2026-86413: Negotiate credentials sent to redirected origin\nCVE-2026-86414: leaking host credentials to HTTP proxy\nCVE-2026-86415: auto client cert connection reuse mixup\nCVE-2026-87861: cross-origin reuse of a Negotiate connection\nCVE-2026-87862: HSTS cache import drops longer-lived child\nCVE-2026-87863: HSTS response erases persisted entries\nCVE-2026-92386: server-set cookie aborts cookie jar load\nCVE-2026-92387: never-ending loop via server response omission\nCVE-2026-92388: FTP wildcard write callback mixup\nCVE-2026-92389: TFTP direction confusion\nCVE-2026-92390: -J no-clobber guarantee bypassed with 103 early hints\nCVE-2026-92391: curl_mime_free stack overflow by recursion\nCVE-2026-92392: HTTP/2 upload Use-After-Free\nCVE-2026-94265: Authorization: Negotiate sent to foreign origin\nCVE-2026-94266: password leak in CURLINFO_EFFECTIVE_URL\nCVE-2026-107929: local interface connection reuse mixup\nThere were also some CVE IDs released at the same time that were fixed\nearlier, in 8.22.0, but just announced now:\nCVE-2026-86409: stale SigV4 headers sent unintended\nCVE-2026-86411: FTP connection reuse inherits client-certificate\nCVE-2026-87864: IMAP APPEND plus CRLF conversion command injection\nHere are the CVEs fixed in 8.22.0, which wasn't released in mga10 and so\nare only getting fixed now:\nCVE-2026-13608: OpenLDAP SASL authentication bypass\nCVE-2026-18924: HTTP/2 server push UAF\nCVE-2026-19931: Negotiate ambient user conn reuse\nCVE-2026-80229: OpenSSL provider use-after-free\nCVE-2026-80230: OpenSSL pinning bypass\nCVE-2026-80255: secure cookie attribute bypass with tab\nCVE-2026-82209: domain-scoped PSL domain cookie\n","status":"published","published":"2026-10-17T03:21:49Z","modified":"2026-10-17T03:43:01.411193688Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:11696-1","title":"curl-8.22.0-1.1 on GA media","description":"These are all security issues fixed in the curl-8.22.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-07T00:00:00Z","modified":"2026-09-08T09:00:05.876145789Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"ROOT-OS-ALPINE-315-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Alpine:3.15. Multiple fixed versions available.","status":"published","published":"2026-11-04T10:54:49Z","modified":"2026-11-04T11:15:05.326678118Z","updated_at":"2026-11-04T11:38:21.953745Z"},{"id":"ROOT-OS-ALPINE-317-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Alpine:3.17. Multiple fixed versions available.","status":"published","published":"2026-11-04T16:15:55Z","modified":"2026-11-04T17:16:12.07829906Z","updated_at":"2026-11-04T17:43:22.558805Z"},{"id":"ROOT-OS-ALPINE-320-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Alpine:3.20. Multiple fixed versions available.","status":"published","published":"2026-09-29T09:40:45Z","modified":"2026-09-29T10:15:17.911369015Z","updated_at":"2026-11-02T15:53:28.259095Z"},{"id":"ROOT-OS-ALPINE-321-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Alpine:3.21. Multiple fixed versions available.","status":"published","published":"2026-11-03T11:37:01Z","modified":"2026-11-03T12:15:07.86447651Z","updated_at":"2026-11-03T12:31:35.467775Z"},{"id":"ROOT-OS-ALPINE-322-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Alpine:3.22. Multiple fixed versions available.","status":"published","published":"2026-10-19T06:56:08Z","modified":"2026-10-19T07:15:04.09108109Z","updated_at":"2026-11-02T15:53:28.544053Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Debian:12. Multiple fixed versions available.","status":"published","published":"2026-11-04T06:00:50Z","modified":"2026-11-04T07:15:10.763236309Z","updated_at":"2026-11-04T07:32:10.855619Z"},{"id":"ROOT-OS-DEBIAN-13-CVE-2026-19931","title":"CVE-2026-19931 in curl - Patched by Root","description":"Root has patched CVE-2026-19931 in the curl package for Root:Debian:13. Multiple fixed versions available.","status":"published","published":"2026-11-03T10:50:30Z","modified":"2026-11-03T11:15:06.877342659Z","updated_at":"2026-11-03T11:30:16.221977Z"},{"id":"SUSE-SU-2026:4954-1","title":"Security update for curl","description":"This update for curl fixes the following issues:\n\n- CVE-2026-8932: incomplete mTLS config matching in conn reuse (bsc#1268414).\n- CVE-2026-11856: cross-origin Digest auth state leak (bsc#1268426).\n- CVE-2026-18924: HTTP/2 server push UAF (bsc#1277477).\n- CVE-2026-19931: Negotiate ambient user conn reuse (bsc#1277478).\n- CVE-2026-80255: secure cookie attribute bypass with tab (bsc#1277482).\n- CVE-2026-82209: domain-scoped PSL domain cookie (bsc#1278173).\n- CVE-2026-86409: stale SigV4 headers sent unintended (bsc#1285031).\n- CVE-2026-86410: redirect to SFTP or SCP bypasses host verification (bsc#1285030).\n- CVE-2026-86414: leaking host credentials to HTTP proxy (bsc#1285026).\n- CVE-2026-87862: HSTS cache import drops longer-lived child (bsc#1285023).\n- CVE-2026-87863: HSTS response erases persisted entries (bsc#1285022).\n- CVE-2026-87864: IMAP APPEND plus CRLF conversion command injection (bsc#1285021).\n- CVE-2026-92386: server-set cookie aborts cookie jar load (bsc#1285018).\n- CVE-2026-92387: never-ending loop via server response omission (bsc#1285017).\n- CVE-2026-92388: FTP wildcard write callback mixup (bsc#1285016).\n- CVE-2026-92389: TFTP direction confusion (bsc#1285015).\n- CVE-2026-92390: -J no-clobber guarantee bypassed with 103 early hints (bsc#1285014).\n- CVE-2026-92391: curl_mime_free stack overflow by recursion (bsc#1285013).\n- CVE-2026-92392: HTTP/2 upload Use-After-Free (bsc#1285012).\n- CVE-2026-94266: password leak in CURLINFO_EFFECTIVE_URL (bsc#1285010).\n- CVE-2026-107929: local interface connection reuse mixup (bsc#1285008).\n","status":"published","published":"2026-10-30T16:20:13Z","modified":"2026-11-02T17:23:10.113104458Z","updated_at":"2026-11-02T18:00:32.560004Z"},{"id":"SUSE-SU-2026:5068-1","title":"Security update for curl","description":"This update for curl fixes the following issues:\n\n- CVE-2026-8932: incomplete mTLS config matching in conn reuse (bsc#1268414).\n- CVE-2026-9546: sending old referer (bsc#1268419).\n- CVE-2026-11352: QUIC zero-length UDP datagrams busy-loop (bsc#1268423).\n- CVE-2026-11564: Native CA trust persist (bsc#1268424).\n- CVE-2026-11586: WS Auto-PONG memory exhaustion (bsc#1268425).\n- CVE-2026-11856: cross-origin Digest auth state leak (bsc#1268426).\n- CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).\n- CVE-2026-18924: HTTP/2 server push UAF (bsc#1277477).\n- CVE-2026-19931: Negotiate ambient user conn reuse (bsc#1277478).\n- CVE-2026-80255: secure cookie attribute bypass with tab (bsc#1277482).\n- CVE-2026-82209: domain-scoped PSL domain cookie (bsc#1278173).\n- CVE-2026-86409: stale SigV4 headers sent unintended (bsc#1285031).\n- CVE-2026-86410: redirect to SFTP or SCP bypasses host verification (bsc#1285030).\n- CVE-2026-86411: FTP connection reuse inherits client-certificate (bsc#1285029).\n- CVE-2026-86412: server-set cookie erases cookie jar (bsc#1285028).\n- CVE-2026-86413: Negotiate credentials sent to redirected origin (bsc#1285027).\n- CVE-2026-86414: leaking host credentials to HTTP proxy (bsc#1285026).\n- CVE-2026-87861: cross-origin reuse of a Negotiate connection (bsc#1285024).\n- CVE-2026-87862: HSTS cache import drops longer-lived child (bsc#1285023).\n- CVE-2026-87863: HSTS response erases persisted entries (bsc#1285022).\n- CVE-2026-87864: IMAP APPEND plus CRLF conversion command injection (bsc#1285021).\n- CVE-2026-92386: server-set cookie aborts cookie jar load (bsc#1285018).\n- CVE-2026-92387: never-ending loop via server response omission (bsc#1285017).\n- CVE-2026-92388: FTP wildcard write callback mixup (bsc#1285016).\n- CVE-2026-92389: TFTP direction confusion (bsc#1285015).\n- CVE-2026-92390: -J no-clobber guarantee bypassed with 103 early hints (bsc#1285014).\n- CVE-2026-92391: curl_mime_free stack overflow by recursion (bsc#1285013).\n- CVE-2026-92392: HTTP/2 upload Use-After-Free (bsc#1285012).\n- CVE-2026-94265: Authorization: Negotiate sent to foreign origin (bsc#1285011).\n- CVE-2026-94266: password leak in CURLINFO_EFFECTIVE_URL (bsc#1285010).\n- CVE-2026-107929: local interface connection reuse mixup (bsc#1285008).\n  \nChanges for curl:\n\n- Updated curl to version 8.22.0. (jsc#PED-16984)\n","status":"published","published":"2026-11-03T08:13:17Z","modified":"2026-11-03T22:45:04.218292646Z","updated_at":"2026-11-03T22:59:30.419462Z"},{"id":"SUSE-SU-2026:5069-1","title":"Security update for curl","description":"This update for curl fixes the following issues:\n\n- CVE-2026-8932: incomplete mTLS config matching in conn reuse (bsc#1268414).\n- CVE-2026-9546: sending old referer (bsc#1268419).\n- CVE-2026-11352: QUIC zero-length UDP datagrams busy-loop (bsc#1268423).\n- CVE-2026-11564: Native CA trust persist (bsc#1268424).\n- CVE-2026-11586: WS Auto-PONG memory exhaustion (bsc#1268425).\n- CVE-2026-11856: cross-origin Digest auth state leak (bsc#1268426).\n- CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).\n- CVE-2026-18924: HTTP/2 server push UAF (bsc#1277477).\n- CVE-2026-19931: Negotiate ambient user conn reuse (bsc#1277478).\n- CVE-2026-80255: secure cookie attribute bypass with tab (bsc#1277482).\n- CVE-2026-82209: domain-scoped PSL domain cookie (bsc#1278173).\n- CVE-2026-86409: stale SigV4 headers sent unintended (bsc#1285031).\n- CVE-2026-86410: redirect to SFTP or SCP bypasses host verification (bsc#1285030).\n- CVE-2026-86411: FTP connection reuse inherits client-certificate (bsc#1285029).\n- CVE-2026-86412: server-set cookie erases cookie jar (bsc#1285028).\n- CVE-2026-86413: Negotiate credentials sent to redirected origin (bsc#1285027).\n- CVE-2026-86414: leaking host credentials to HTTP proxy (bsc#1285026).\n- CVE-2026-87861: cross-origin reuse of a Negotiate connection (bsc#1285024).\n- CVE-2026-87862: HSTS cache import drops longer-lived child (bsc#1285023).\n- CVE-2026-87863: HSTS response erases persisted entries (bsc#1285022).\n- CVE-2026-87864: IMAP APPEND plus CRLF conversion command injection (bsc#1285021).\n- CVE-2026-92386: server-set cookie aborts cookie jar load (bsc#1285018).\n- CVE-2026-92387: never-ending loop via server response omission (bsc#1285017).\n- CVE-2026-92388: FTP wildcard write callback mixup (bsc#1285016).\n- CVE-2026-92389: TFTP direction confusion (bsc#1285015).\n- CVE-2026-92390: -J no-clobber guarantee bypassed with 103 early hints (bsc#1285014).\n- CVE-2026-92391: curl_mime_free stack overflow by recursion (bsc#1285013).\n- CVE-2026-92392: HTTP/2 upload Use-After-Free (bsc#1285012).\n- CVE-2026-94265: Authorization: Negotiate sent to foreign origin (bsc#1285011).\n- CVE-2026-94266: password leak in CURLINFO_EFFECTIVE_URL (bsc#1285010).\n- CVE-2026-107929: local interface connection reuse mixup (bsc#1285008).\n\nChanges for curl:\n\n- Updated to version 8.22.0. (jsc#PED-16984)\n","status":"published","published":"2026-11-03T08:13:44Z","modified":"2026-11-03T22:45:05.964085219Z","updated_at":"2026-11-03T22:59:30.419462Z"},{"id":"SUSE-SU-2026:5071-1","title":"Security update for curl","description":"This update for curl fixes the following issues:\n\n- CVE-2026-8932: incomplete mTLS config matching in conn reuse (bsc#1268414).\n- CVE-2026-11856: cross-origin Digest auth state leak (bsc#1268426).\n- CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).\n- CVE-2026-19931: Negotiate ambient user conn reuse (bsc#1277478).\n- CVE-2026-86409: stale SigV4 headers sent unintended (bsc#1285031).\n- CVE-2026-86410: redirect to SFTP or SCP bypasses host verification (bsc#1285030).\n- CVE-2026-86414: leaking host credentials to HTTP proxy (bsc#1285026).\n- CVE-2026-87864: IMAP APPEND plus CRLF conversion command injection (bsc#1285021).\n- CVE-2026-92388: FTP wildcard write callback mixup (bsc#1285016).\n- CVE-2026-92389: TFTP direction confusion (bsc#1285015).\n- CVE-2026-92391: curl_mime_free stack overflow by recursion (bsc#1285013).\n- CVE-2026-94266: password leak in CURLINFO_EFFECTIVE_URL (bsc#1285010).\n","status":"published","published":"2026-11-03T08:14:35Z","modified":"2026-11-03T22:45:03.520972957Z","updated_at":"2026-11-03T22:59:30.419462Z"}]}}