{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7598","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-05-01T10:45:11.583Z","datePublished":"2026-05-01T21:30:11.006Z","dateUpdated":"2026-06-30T12:10:55.960Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-05-01T21:30:11.006Z"},"title":"libssh2 userauth.c userauth_password integer overflow","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-190","lang":"en","description":"Integer Overflow"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-189","lang":"en","description":"Numeric Error"}]}],"affected":[{"vendor":"n/a","product":"libssh2","versions":[{"version":"1.11.0","status":"affected"},{"version":"1.11.1","status":"affected"}],"cpes":["cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":7.3,"vectorString":"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","baseSeverity":"HIGH"}},{"cvssV3_0":{"version":"3.0","baseScore":7.3,"vectorString":"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","baseSeverity":"HIGH"}},{"cvssV2_0":{"version":"2.0","baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C"}}],"timeline":[{"time":"2026-05-01T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-05-01T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-05-01T12:50:16.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"dapickle (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/vuln/360555","name":"VDB-360555 | libssh2 userauth.c userauth_password integer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/360555/cti","name":"VDB-360555 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/805564","name":"Submit #805564 | libssh2 <= 1.11.1 Integer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/libssh2/libssh2/pull/1858","tags":["issue-tracking","patch"]},{"url":"https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1","tags":["patch"]},{"url":"https://github.com/libssh2/libssh2/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"references":[{"url":"https://vuldb.com/submit/805564","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-04T13:31:33.083934Z","id":"CVE-2026-7598","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-04T13:31:37.545Z"}},{"affected":[{"cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","product":"Red Hat Hardened Images","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:trusted_profile_analyzer:2"],"defaultStatus":"affected","product":"Red Hat Trusted Profile Analyzer","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"unaffected","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift_update_service:5"],"defaultStatus":"unaffected","product":"Red Hat OpenShift Update Service","vendor":"Red Hat"}],"datePublic":"2026-05-01T21:30:11.006Z","descriptions":[{"lang":"en","value":"A flaw was found in the libssh2 library. A remote attacker can exploit an integer overflow vulnerability in the `userauth_password` function by manipulating the `username_len` or `password_len` arguments and cause a heap-based buffer overflow. This leads to a crash to the application linked to the library and potentially allows arbitrary code execution."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","description":"Integer Overflow or Wraparound","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-7598"},{"name":"RHBZ#2464597","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2464597"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7598.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:7021"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:16736"}],"solutions":[{"lang":"en","value":"RHSA-2026:7021: Red Hat Hardened Images"},{"lang":"en","value":"RHSA-2026:16736: Red Hat Hardened Images"}],"timeline":[{"lang":"en","time":"2026-05-01T22:00:54.329Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-05-01T21:30:11.006Z","value":"Made public."}],"title":"libssh2: integer overflow via large username or password arguments","workarounds":[{"lang":"en","value":"To mitigate this flaw, applications linked to the libssh2 library should be configured or updated to exclusively use public key authentication. Explicitly disabling password-based logins prevents the application from executing the vulnerable userauth_password function."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:10:55.960Z"}}]}}