{"id":"CVE-2026-80255","aliases":["ALPINE-CVE-2026-80255","AZL-99810","AZL-99828","AZL-99864","BELL-CVE-2026-80255","CURL-CVE-2026-80255","DEBIAN-CVE-2026-80255","EUVD-2026-72151","GHSA-vmmm-3jqx-jgx8","MGASA-2026-0515","RHSA-2026:63161","ROOT-OS-ALPINE-320-CVE-2026-80255","ROOT-OS-ALPINE-321-CVE-2026-80255","ROOT-OS-ALPINE-322-CVE-2026-80255","ROOT-OS-DEBIAN-13-CVE-2026-80255","SUSE-SU-2026:4954-1","SUSE-SU-2026:5068-1","SUSE-SU-2026:5069-1","UBUNTU-CVE-2026-80255","USN-8820-1","openSUSE-SU-2026:11696-1"],"status":"published","title":"secure cookie attribute bypass with tab","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00478,"percentile":0.41595,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-201"],"published":"2026-09-02T08:00:00Z","modified":"2026-11-03T22:56:56Z","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":"Alpaquita:23","package":"curl","fixed_in":["8.22.0-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"curl","fixed_in":["8.22.0-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"curl","fixed_in":["8.22.0-r0"],"sources":["osv"]},{"ecosystem":"BellSoft 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cookie attribute bypass with tab","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T17:48:54.275Z","modified":"2026-09-15T06:03:13.4Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-201","CWE-201"],"updated_at":"2026-11-02T13:45:25.313702Z"}],"euvd":[{"id":"EUVD-2026-72151","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T17:48:54Z","modified":"2026-09-15T06:03:13Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T17:28:19.01786Z"}],"ghsa":[{"id":"GHSA-vmmm-3jqx-jgx8","title":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32)...","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:34:39Z","modified":"2026-09-08T21:34:07Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-201"],"updated_at":"2026-11-02T15:11:35.275364Z"}],"nvd":[{"id":"CVE-2026-80255","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22.623Z","modified":"2026-09-15T07:16:30.77Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-201"],"updated_at":"2026-11-02T14:12:44.082631Z"}],"osv":[{"id":"ALPINE-CVE-2026-80255","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22.623Z","modified":"2026-10-01T02:17:49.414073908Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:27:50.764331Z"},{"id":"BELL-CVE-2026-80255","status":"published","published":"2026-09-04T06:05:07.956449Z","modified":"2026-09-10T07:15:05.577037079Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:28:26.041478Z"},{"id":"CVE-2026-80255","title":"secure cookie attribute bypass with tab","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T17:48:54.275Z","modified":"2026-11-03T22:56:56.600146499Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-201"],"updated_at":"2026-11-03T23:33:40.400713Z"},{"id":"DEBIAN-CVE-2026-80255","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the `Secure` attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22.623Z","modified":"2026-10-01T03:03:47.201580201Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:46:04.001673Z"},{"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":"UBUNTU-CVE-2026-80255","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the `Secure` attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:00Z","modified":"2026-10-17T13:01:10.288597814Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"AZL-99810","title":"CVE-2026-80255 affecting package mysql 8.0.46-1","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22Z","modified":"2026-09-08T12:40:46.799783Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99828","title":"CVE-2026-80255 affecting package rust 1.75.0-31","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22Z","modified":"2026-09-14T05:26:59Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"AZL-99864","title":"CVE-2026-80255 affecting package rust 1.90.0-10","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-06T18:17:22Z","modified":"2026-09-08T12:40:09.001813Z","updated_at":"2026-11-02T15:28:12.596039Z"},{"id":"CURL-CVE-2026-80255","title":"secure cookie attribute bypass with tab","description":"A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of\nspace (ascii code 32) immediately before the `Secure` attribute causes curl to\nstore the cookie without its Secure flag. The cookie might then wrongfully be\nsent over plaintext HTTP on subsequent requests to the same host.","status":"published","published":"2026-09-02T08:00:00Z","modified":"2026-10-25T01:05:44.226162024Z","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-320-CVE-2026-80255","title":"CVE-2026-80255 in curl - Patched by Root","description":"Root has patched CVE-2026-80255 in the curl package for Root:Alpine:3.20. Multiple fixed versions available.","status":"published","published":"2026-09-29T09:40:45Z","modified":"2026-09-29T10:16:08.958641083Z","updated_at":"2026-11-02T15:53:28.544053Z"},{"id":"ROOT-OS-ALPINE-321-CVE-2026-80255","title":"CVE-2026-80255 in curl - Patched by Root","description":"Root has patched CVE-2026-80255 in the curl package for Root:Alpine:3.21. Multiple fixed versions available.","status":"published","published":"2026-11-03T11:37:01Z","modified":"2026-11-03T12:15:09.317345332Z","updated_at":"2026-11-03T12:31:35.467775Z"},{"id":"ROOT-OS-ALPINE-322-CVE-2026-80255","title":"CVE-2026-80255 in curl - Patched by Root","description":"Root has patched CVE-2026-80255 in the curl package for Root:Alpine:3.22. Multiple fixed versions available.","status":"published","published":"2026-10-19T06:56:08Z","modified":"2026-10-19T07:15:08.002436739Z","updated_at":"2026-11-02T15:53:28.544053Z"},{"id":"ROOT-OS-DEBIAN-13-CVE-2026-80255","title":"CVE-2026-80255 in curl - Patched by Root","description":"Root has patched CVE-2026-80255 in the curl package for Root:Debian:13. Multiple fixed versions available.","status":"published","published":"2026-11-03T10:50:30Z","modified":"2026-11-03T11:15:04.817953658Z","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":"USN-8820-1","title":"curl vulnerabilities","description":"Eunsoo Kim discovered that curl incorrectly handled SASL negotiation for\nLDAP authentication in certain circumstances. A machine-in-the-middle\nattacker could possibly use this issue to bypass peer validation. This\nissue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS.\n(CVE-2026-13608)\n\nStephan Zeisberg discovered that curl incorrectly handled HTTP/2 Server\nPush streams when sharing connections between handles. A remote attacker\ncould possibly use this issue to cause curl to crash, resulting in a denial\nof service, or execute arbitrary code. (CVE-2026-18924)\n\nStanislav Fort discovered that curl incorrectly managed the lifetime of\npooled TLS connections when using the multi interface. An attacker could\npossibly use this issue to cause curl to crash, resulting in a denial of\nservice, or execute arbitrary code. This issue only affected Ubuntu 26.04\nLTS. (CVE-2026-80229)\n\nStanislav Fort discovered that curl did not properly enforce public key\npinning when certificate verification was disabled in certain\ncircumstances. A remote attacker could possibly use this issue to bypass\npinning checks and cause curl to accept connections that should have been\nrejected. (CVE-2026-80230)\n\nStanislav Fort discovered that curl incorrectly handled the Secure\nattribute of cookies in certain circumstances. A remote attacker could\npossibly use this issue to obtain sensitive information. This issue only\naffected Ubuntu 26.04 LTS. (CVE-2026-80255)\n\nStanislav Fort discovered that curl did not properly enforce Public\nSuffix List boundaries when handling cookies in certain circumstances. A\nremote attacker could possibly use this issue to cause cookies to be sent\nto unrelated domains, resulting in sensitive information being exposed.\nThis issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04\nLTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-82209)\n\nAdy Elouej discovered that curl did not clear proxy authentication state\nbetween requests when reusing a handle with environment-variable proxy\nconfiguration. A remote attacker could possibly use this issue to obtain\nsensitive credentials. This issue was previously fixed in USN-8487-1, but\nthat fix was incomplete for Ubuntu 16.04 LTS. (CVE-2026-8927)","status":"published","published":"2026-09-24T20:13:19Z","modified":"2026-09-26T04:41:35.074747182Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}