{"id":"CVE-2025-9901","aliases":[],"cve":{"records":[{"id":"CVE-2025-9901","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2025-09-03T05:04:55.177Z","published":"2025-09-03T12:32:27.414Z","modified":"2026-11-05T16:09:15.187Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-05T16:09:15.187Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2025-09-03T14:01:56.925Z"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2025-9901","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2392790","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://gitlab.gnome.org/GNOME/libsoup/-/issues/453","tags":[],"source":"redhat"}],"weaknesses":[{"id":"CWE-524","description":"Use of Cache Containing Sensitive Information","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2025-09-03T13:59:52.942718Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Libsoup: improper handling of http vary header in libsoup caching","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in libsoup’s caching mechanism, SoupCache, where the HTTP Vary header is ignored when evaluating cached responses. This header ensures that responses vary appropriately based on request headers such as language or authentication. Without this check, cached content can be incorrectly reused across different requests, potentially exposing sensitive user information. While the issue is unlikely to affect everyday desktop use, it could result in confidentiality breaches in proxy or multi-user environments.","score":5.9,"severity":"medium","published":"2025-09-03T12:32:27.414Z","modified":"2026-11-05T16:09:15.187Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:10"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 6","platforms":[],"versions":[],"defaultStatus":"unknown","cpes":["cpe:/o:redhat:rhel_els:6"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"},{"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-2025-9901"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"}],"remediation":[{"text":"Mitigation for this issue is either not available or the currently available options do not meet Red Hat Product Security criteria comprising ease of use, deployment applicability to widespread installations, or stability. Administrators should apply vendor-supplied patches once they become available.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"}],"references":["https://access.redhat.com/security/cve/CVE-2025-9901","https://bugzilla.redhat.com/show_bug.cgi?id=2392790","https://gitlab.gnome.org/GNOME/libsoup/-/issues/453"],"sources":[{"name":"CVE","id":"CVE-2025-9901","modified":"2026-11-05T16:09:15.187Z","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9}],"sourceAffected":[],"observedAt":"2026-11-05T17:34:41.890Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:45:32.518Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-05T17:45:36.362Z","attemptedAt":"2026-11-05T17:45:36.362Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-05T17:45:36.083Z","attemptedAt":"2026-11-05T17:45:36.083Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-05T17:45:36.040Z","attemptedAt":"2026-11-05T17:45:36.040Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-05T17:45:35.965Z","attemptedAt":"2026-11-05T17:45:35.965Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2025-9901","url":"https://www.first.org/epss/","probability":0.00472,"percentile":0.4094,"date":"2026-11-05","checkedAt":"2026-11-05T17:45:35.965Z"},{"source":"ENISA EUVD","id":"EUVD-2025-26502","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-26502","modified":"Nov 5, 2026, 4:09:15 PM","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-11-05T17:45:36.040Z"},{"source":"GitHub Advisory Database","id":"GHSA-hxjp-2xf5-wmrj","url":"https://github.com/advisories/GHSA-hxjp-2xf5-wmrj","modified":"2026-05-06T18:30:24Z","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-11-05T17:45:36.083Z"},{"source":"NVD","id":"CVE-2025-9901","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9901","modified":"2026-11-05T17:17:21.023","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-11-05T17:45:36.362Z"}],"aiSummary":{"text":"Libsoup's caching mechanism ignores the HTTP Vary header, potentially exposing sensitive user information in proxy or multi-user environments. The issue affects Red Hat Enterprise Linux 7, 8, 9, and 10. Confidentiality breaches may occur due to incorrect reuse of cached content.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-05T17:36:12.227Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2025-9901"}]}}