{"id":"CVE-2026-7598","aliases":["ALPINE-CVE-2026-7598","AZL-85451","AZL-97404","AZL-97431","BELL-CVE-2026-7598","CLSA-2026-1778247114","CLSA-2026-1778602690","CLSA-2026-1778602853","CLSA-2026-1778745959","CLSA-2026-1778895374","CLSA-2026-1779216196","CLSA-2026-1791823540","DEBIAN-CVE-2026-7598","EUVD-2026-26722","GHSA-jhp3-h4hp-2c3p","JLSEC-2026-492","MGASA-2026-0273","OESA-2026-2336","RHSA-2026:16736","RHSA-2026:61752","RHSA-2026:7021","ROOT-OS-DEBIAN-11-CVE-2026-7598","ROOT-OS-DEBIAN-12-CVE-2026-7598","SUSE-SU-2026:23049-1","SUSE-SU-2026:23187-1","SUSE-SU-2026:23214-1","SUSE-SU-2026:23225-1","SUSE-SU-2026:23245-1","SUSE-SU-2026:3525-1","SUSE-SU-2026:3526-1","SUSE-SU-2026:3541-1","SUSE-SU-2026:4095-1","UBUNTU-CVE-2026-7598","USN-8309-1","openSUSE-SU-2026:11109-1","openSUSE-SU-2026:21549-1"],"status":"published","title":"libssh2 userauth.c userauth_password integer overflow","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00466,"percentile":0.40606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189","CWE-190"],"published":"2026-05-01T21:30:11Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Alpine:v3.20","package":"libssh2","fixed_in":["1.11.0-r3"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"libssh2","fixed_in":["1.11.1-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"libssh2","fixed_in":["1.11.1-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"libssh2","fixed_in":["1.11.1-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"libssh2","fixed_in":["1.11.1-r2"],"sources":["osv"]},{"ecosystem":"Azure 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userauth.c userauth_password integer overflow","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T21:30:11.006Z","modified":"2026-09-01T12:04:41.573Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C","level":"high","assessor":"cna"},{"version":"3.0","score":7.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C","level":"high","assessor":"cna"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C","assessor":"cna"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-190","CWE-189","CWE-190"],"updated_at":"2026-11-02T14:20:06.216584Z"}],"euvd":[{"id":"EUVD-2026-26722","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T21:30:11Z","modified":"2026-09-01T12:04:41Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"updated_at":"2026-11-02T18:01:19.285273Z"}],"ghsa":[{"id":"GHSA-jhp3-h4hp-2c3p","title":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the...","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-02T00:31:21Z","modified":"2026-09-01T15:31:44Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:11:13.213599Z"}],"nvd":[{"id":"CVE-2026-7598","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16.947Z","modified":"2026-09-01T13:19:59.617Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"secondary"}],"cwes":["CWE-189","CWE-190"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"ALPINE-CVE-2026-7598","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16.947Z","modified":"2026-10-01T02:17:49.406032795Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:27:50.764331Z"},{"id":"BELL-CVE-2026-7598","status":"published","published":"2026-05-06T06:11:08.291583Z","modified":"2026-05-09T07:20:30.624962Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:28:26.041478Z"},{"id":"CVE-2026-7598","title":"libssh2 userauth.c userauth_password integer overflow","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T21:30:11.006Z","modified":"2026-10-28T11:17:47.151778766Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"cwes":["CWE-189","CWE-190"],"updated_at":"2026-11-02T15:45:17.102988Z"},{"id":"DEBIAN-CVE-2026-7598","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16.947Z","modified":"2026-10-01T03:03:34.524936571Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:46:03.502256Z"},{"id":"JLSEC-2026-492","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function `userauth_password` of the file `src/userauth.c`. Such manipulation of the argument `username_len/password_len` leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-08T14:39:40.462Z","modified":"2026-07-25T18:24:31.55871492Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:47:18.573531Z"},{"id":"OESA-2026-2336","title":"libssh2 security update","description":"libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25), SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*, SECSH-DHGEX(04), and SECSH-NUMBERS(10).\r\n\r\nSecurity Fix(es):\n\nA security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.(CVE-2026-7598)","status":"published","published":"2026-05-15T11:11:18Z","modified":"2026-08-18T01:19:58.366603653Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:52:46.449097Z"},{"id":"RHSA-2026:16736","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-05-15T10:14:46Z","modified":"2026-10-06T10:31:21.181363054Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:18.520917Z"},{"id":"RHSA-2026:61752","title":"Red Hat Security Advisory: libssh2 security update","status":"published","published":"2026-09-01T10:28:36Z","modified":"2026-09-01T10:56:27.075433843Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:7021","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-05-11T10:08:19Z","modified":"2026-10-06T10:31:21.044272024Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"UBUNTU-CVE-2026-7598","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:00Z","modified":"2026-09-22T15:32:24.504947601Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:57:13.483205Z"},{"id":"AZL-85451","title":"CVE-2026-7598 affecting package libssh2 for versions less than 1.11.1-2","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:25.190302Z"},{"id":"AZL-97404","title":"CVE-2026-7598 affecting package rust for versions less than 1.75.0-30","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.280152Z"},{"id":"AZL-97431","title":"CVE-2026-7598 affecting package rust for versions less than 1.96.1-2","description":"A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.","status":"published","published":"2026-05-01T22:16:16Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.280152Z"},{"id":"CLSA-2026-1778247114","title":"libssh2: Fix of CVE-2026-7598","description":"- CVE-2026-7598: fix integer overflow in userauth_password (CVE-2026-7598)","status":"published","published":"2026-05-13T08:55:27Z","modified":"2026-06-01T00:33:18.823909734Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778602690","title":"Fix CVE(s): CVE-2026-7598","description":"   * SECURITY UPDATE: fix integer overflow in username_len bounds checks across userauth_list, userauth_password and password change paths in src/userauth.c\n     - debian/patches/CVE-2026-7598.patch: fix integer overflow in username_len bounds checks across userauth_list, userauth_password and password change paths in src/userauth.c\n     - CVE-2026-7598","status":"published","published":"2026-05-12T16:18:15Z","modified":"2026-06-04T10:04:25.594915Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778602853","title":"Fix CVE(s): CVE-2026-7598","description":"   * SECURITY UPDATE: fix integer overflow in username_len bounds checks across userauth_list, userauth_password and password change paths in src/userauth.c\n     - debian/patches/CVE-2026-7598.patch: fix integer overflow in username_len bounds checks across userauth_list, userauth_password and password change paths in src/userauth.c\n     - CVE-2026-7598","status":"published","published":"2026-05-12T16:20:58Z","modified":"2026-06-04T10:04:25.717749Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778745959","title":"libssh2: Fix of CVE-2026-7598","description":"- CVE-2026-7598: add username_len/password_len bounds checks in\n  userauth_list() and userauth_password() to prevent integer overflow\n  when allocating the SSH USERAUTH_REQUEST packet buffer","status":"published","published":"2026-05-14T19:22:04Z","modified":"2026-06-01T00:33:17.211927631Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778895374","title":"Fix CVE(s): CVE-2026-7598","description":"   * SECURITY UPDATE: Fix integer overflow in userauth_password username_len/password_len bounds checks\n     - debian/patches/CVE-2026-7598.patch: Fix integer overflow in userauth_password username_len/password_len bounds checks\n     - CVE-2026-7598","status":"published","published":"2026-05-16T01:36:18Z","modified":"2026-06-04T10:04:29.265502Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1779216196","title":"libssh2: Fix of CVE-2026-7598","description":"- CVE-2026-7598: fix integer overflow in userauth_password (CVE-2026-7598)","status":"published","published":"2026-05-19T18:43:20Z","modified":"2026-06-01T00:33:27.4096666Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"CLSA-2026-1791823540","title":"Fix CVE(s): CVE-2025-15661, CVE-2026-7598","description":"   * SECURITY UPDATE: out-of-bounds heap read in SFTP symlink handling\n     - debian/patches/CVE-2025-15661.patch: validate that the link length\n       in a SSH_FXP_NAME response fits within the received packet before\n       copying it in sftp_symlink() in src/sftp.c\n     - CVE-2025-15661","status":"published","published":"2026-10-19T15:58:53Z","modified":"2026-10-26T09:32:05.636747957Z","updated_at":"2026-11-02T15:43:50.599064Z"},{"id":"MGASA-2026-0273","title":"Updated libssh2 packages fix security vulnerabilities","description":"The updated packages fix security vulnerabilities:\nHeap Buffer Over-read via sftp_symlink() in sftp.c. (CVE-2025-15661)\nlibssh2 userauth.c userauth_password integer overflow. (CVE-2026-7598)\nPre-Authentication DoS via SSH_MSG_EXT_INFO Handler. (CVE-2026-55199)\nOut-of-Bounds Write via Unchecked packet_length in transport.c.\n(CVE-2026-55200)\nInteger Overflow in publickey Subsystem Attribute Allocation.\n(CVE-2026-58050)\nFree of Uninitialized Pointer in publickey List Cleanup.\n(CVE-2026-58051)\n","status":"published","published":"2026-07-20T19:06:32Z","modified":"2026-07-20T19:20:56.035464062Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:11109-1","title":"libssh2-1-1.11.1-3.1 on GA media","description":"These are all security issues fixed in the libssh2-1-1.11.1-3.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-23T00:00:00Z","modified":"2026-06-24T09:00:05.16911932Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"openSUSE-SU-2026:21549-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-10T15:24:32Z","modified":"2026-08-12T18:23:41.472675266Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"ROOT-OS-DEBIAN-11-CVE-2026-7598","title":"CVE-2026-7598 in libssh2 - Patched by Root","description":"Root has patched CVE-2026-7598 in the libssh2 package for Root:Debian:11. Multiple fixed versions available.","status":"published","published":"2026-08-20T16:07:02Z","modified":"2026-08-20T17:30:06.719040665Z","updated_at":"2026-11-02T15:53:30.44348Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2026-7598","title":"CVE-2026-7598 in libssh2 - Patched by Root","description":"Root has patched CVE-2026-7598 in the libssh2 package for Root:Debian:12. Multiple fixed versions available.","status":"withdrawn","published":"2026-08-25T11:14:15Z","modified":"2026-09-07T08:00:08.114512741Z","updated_at":"2026-11-02T15:53:32.570806Z"},{"id":"SUSE-SU-2026:23049-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-10T15:24:14Z","modified":"2026-08-12T10:45:03.527208296Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23187-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-55199: pre-authentication DoS via the `SSH_MSG_EXT_INFO` handler (bsc#1268530).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-17T16:37:24Z","modified":"2026-08-26T18:23:31.171326675Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23214-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-10T15:24:14Z","modified":"2026-08-27T18:23:09.163427698Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23225-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-10T15:24:14Z","modified":"2026-08-27T18:23:10.117559844Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23245-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n\nOther updates and bugfixes:\n\n- Fix an issue with Encrypt-then-MAC family (bsc#1221622).\n  * Test the ETM feature in the remote end's configuration when receiving data. Upstream issue: #1331.\n- Always add the KEX pseudo-methods `ext-info-c` and `kex-strict-c-v00@openssh.com` when configuring custom method list\n  (bsc#1218971).\n  * The strict-kex extension is announced in the list of available KEX methods. However, when the default KEX method\n    list is modified or replaced, the extension is not added back automatically.\n","status":"published","published":"2026-08-19T10:47:36Z","modified":"2026-08-27T18:23:11.283934635Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:3525-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-55199: pre-authentication DoS via the `SSH_MSG_EXT_INFO` handler (bsc#1268530).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-07T13:08:26Z","modified":"2026-08-08T09:00:06.084070296Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3526-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-07T13:09:52Z","modified":"2026-08-08T09:00:06.060355593Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3541-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response\n  (bsc#1269568).\n- CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-08-10T12:50:14Z","modified":"2026-08-11T09:15:07.240632328Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"SUSE-SU-2026:4095-1","title":"Security update for libssh2_org","description":"This update for libssh2_org fixes the following issues:\n\n- CVE-2025-15661: out-of-bounds heap read vulnerability in the sftp_symlink() function in src/sftp.c (bsc#1268546).\n- CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890).\n- CVE-2026-58050: attacker controlled attribute count from a publickey-subsystem response is used without bounds\n  checking and can cause to a heap buffer overflow in a connecting libssh2 client (bsc#1269568).\n- CVE-2026-58051: public key list is increased and does not zero-initialized new entries, which can cause an\n  uninitialized pointer to be freed when a malformed response is sent by an SSH server (bsc#1269567).\n- CVE-2026-66032: Arbitrary code execution via double-free in SFTP session (bsc#1272737).\n- CVE-2026-66033: Denial of Service via integer underflow in AES-GCM cipher negotiation (bsc#1272736).\n- CVE-2026-66034: Information disclosure and potential arbitrary code execution via heap out-of-bounds read\n  (bsc#1272735).\n- CVE-2026-66035: Arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).\n","status":"published","published":"2026-09-09T08:34:01Z","modified":"2026-09-14T18:23:15.58672002Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"USN-8309-1","title":"libssh2 vulnerability","description":"It was discovered that libssh2 incorrectly handled username and password\nlength values during SSH password authentication. A remote attacker could\npossibly use this issue to cause a denial of service.","status":"published","published":"2026-05-26T18:27:23Z","modified":"2026-06-30T18:16:28.748902389Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}