{"id":"CVE-2026-7598","summary":"libssh2 userauth.c userauth_password integer overflow","details":"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.","modified":"2026-09-14T18:26:58.165304906Z","published":"2026-05-01T21:30:11.006Z","related":["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","openSUSE-SU-2026:11109-1","openSUSE-SU-2026:21549-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7598.json","cna_assigner":"VulDB","cwe_ids":["CWE-189","CWE-190"]},"references":[{"type":"WEB","url":"https://github.com/libssh2/libssh2/"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7598.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16736"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61752"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7021"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-7598"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7598.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7598"},{"type":"ADVISORY","url":"https://vuldb.com/submit/805564"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/360555"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2464597"},{"type":"REPORT","url":"https://vuldb.com/vuln/360555/cti"},{"type":"FIX","url":"https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1"},{"type":"FIX","url":"https://github.com/libssh2/libssh2/pull/1858"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libssh2/libssh2","events":[{"introduced":"0"},{"fixed":"256d04b60d80bf1190e96b0ad1e91b2174d744b1"}],"database_specific":{"cpe":"cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.11.1"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["1.11.0","1.11.1","libssh2-1.11.1","libssh2-1.11.0","libssh2-1.10.0","libssh2-1.9.0","libssh2-1.8.0","libssh2-1.7.0","libssh2-1.6.0","libssh2-1.5.0","libssh2-1.4.3","libssh2-1.4.2","libssh2-1.4.1","libssh2-1.4.0","libssh2-1.3.0","libssh2-1.2.9","libssh2-1.2.8","libssh2-1.2.7","libssh2-1.2.6","libssh2-1.2.5","libssh2-1.2.4","libssh2-1.2.3","libssh2-1.2.1","libssh2-1.2","RELEASE.1.1","RELEASE.1.0","RELEASE.0.18","RELEASE.0.17","RELEASE.0.16","RELEASE.0.15","beforenb2-0.14","beforenb-0.14","RELEASE.0.14","RELEASE.0.13","RELEASE.0.12","RELEASE.0.11","RELEASE.0.10","RELEASE.0.8","RELEASE.0.7","RELEASE.0.6","RELEASE.0.5","RELEASE.0.3","RELEASE.0.1"],"database_specific":{"vanir_signatures":[{"target":{"file":"src/userauth.c"},"deprecated":false,"digest":{"line_hashes":["105944883648702716469832361508455745779","135921686818758094780601426761088711007","104968438572238154354189502596144171515","23960908240841587187684784409845704464","220105438989333876975692306598100991888","71058313471587911986208624496644520080","339743418489222310773872299585903339361","117776238266867731180321242929075759140","336093971610785554616069224677083843150","313759567380244175551245030653333576709"],"threshold":0.9},"id":"CVE-2026-7598-b7bfc08c","signature_type":"Line","signature_version":"v1","source":"https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1"},{"deprecated":false,"digest":{"function_hash":"95083009476355537283530344868539956767","length":5127},"id":"CVE-2026-7598-d9addf1a","signature_type":"Function","signature_version":"v1","source":"https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1","target":{"file":"src/userauth.c","function":"userauth_list"}},{"signature_type":"Function","signature_version":"v1","source":"https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1","target":{"file":"src/userauth.c","function":"userauth_password"},"deprecated":false,"digest":{"function_hash":"57283062015952208657733224504165706600","length":7174},"id":"CVE-2026-7598-e837479b"}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-7598.json","vanir_signatures_modified":"2026-09-03T08:07:39Z"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}