{"id":"CVE-2026-91926","aliases":[],"cve":{"records":[{"id":"CVE-2026-91926","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-15T10:53:12.456Z","published":"2026-09-15T11:49:10.516Z","modified":"2026-11-06T19:56:33.639Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-06T19:56:33.639Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-17T14:24:37.383Z"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91926","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533698","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-401","description":"Missing Release of Memory after Effective Lifetime","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-17T14:24:14.247594Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Gss-ntlmssp: gss-ntlmssp: memory leak in ntlm_decode_target_info via duplicated av_pair entries in ntlm challenge","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in gss-ntlmssp. A memory leak occurs in the NTLM target-info parser when a crafted NTLM CHALLENGE message contains duplicated string-valued AV_PAIR entries. The parser allocates memory for each string value but does not free the previous allocation when the same AV_PAIR type appears more than once, leaking the earlier allocation. A malicious or man-in-the-middle server can exploit this to cause gradual memory exhaustion on the client during NTLM authentication, leading to a denial of service.","score":3.7,"severity":"low","published":"2026-09-15T11:49:10.516Z","modified":"2026-11-06T19:56:33.639Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-91926"}],"remediation":[{"text":"No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-91926"}],"references":["https://access.redhat.com/security/cve/CVE-2026-91926","https://bugzilla.redhat.com/show_bug.cgi?id=2533698"],"sources":[{"name":"CVE","id":"CVE-2026-91926","modified":"2026-11-06T19:56:33.639Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-91926"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7}],"sourceAffected":[],"observedAt":"2026-11-06T22:20:42.780Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:30:32.029Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-07T00:30:34.893Z","attemptedAt":"2026-11-07T00:30:34.893Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-07T00:30:34.922Z","attemptedAt":"2026-11-07T00:30:34.922Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-07T00:30:34.873Z","attemptedAt":"2026-11-07T00:30:34.873Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-07T00:30:34.909Z","attemptedAt":"2026-11-07T00:30:34.909Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-78441","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78441","modified":"Nov 6, 2026, 7:56:33 PM","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-11-07T00:30:34.873Z"},{"source":"NVD","id":"CVE-2026-91926","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91926","modified":"2026-11-06T20:17:28.823","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-11-07T00:30:34.893Z"},{"source":"FIRST EPSS","id":"CVE-2026-91926","url":"https://www.first.org/epss/","probability":0.00371,"percentile":0.31179,"date":"2026-11-06","checkedAt":"2026-11-07T00:30:34.909Z"},{"source":"GitHub Advisory Database","id":"GHSA-x7fj-4fx4-9f96","url":"https://github.com/advisories/GHSA-x7fj-4fx4-9f96","modified":"2026-09-15T12:31:54Z","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-11-07T00:30:34.922Z"}],"aiSummary":{"text":"A memory leak in gss-ntlmssp's NTLM target-info parser occurs when a crafted NTLM CHALLENGE message contains duplicated AV_PAIR entries, potentially causing denial of service. The vulnerability affects Red Hat Enterprise Linux 8. A malicious server can exploit this during NTLM authentication.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T22:26:46.291Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-91926"}]}}