{"id":"CVE-2026-12547","state":"PUBLISHED","title":"Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on proxy switch","description":"SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.","publishedAt":"2026-07-21T18:35:53.214Z","updatedAt":"2026-07-21T19:14:49.960Z","severity":{"score":3.4,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N","source":"redhat"},"assigner":"redhat","products":["Red Hat Red Hat Enterprise Linux 10"],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"libsoup3","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"]}],"references":["https://access.redhat.com/security/cve/CVE-2026-12547","https://bugzilla.redhat.com/show_bug.cgi?id=2489994","https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506"],"weaknesses":["CWE-201"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12547.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12547","state":"PUBLISHED","datePublished":"2026-07-21T18:35:53.214Z","dateUpdated":"2026-07-21T19:14:49.960Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-06-17T18:09:30.319Z"},"containers":{"cna":{"title":"Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on proxy switch","descriptions":[{"lang":"en","value":"SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"libsoup3","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-12547","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2489994","name":"RHBZ#2489994","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506"}],"metrics":[{"other":{"content":{"value":"Low","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.4,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-201","description":"Insertion of Sensitive Information Into Sent Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-07-21T19:14:49.960Z"},"datePublic":"2026-04-25T00:00:00.000Z","x_redhatCweChain":"CWE-201: Insertion of Sensitive Information Into Sent Data","workarounds":[{"lang":"en","value":"If changing desktop proxy settings, close any applications using libsoup, then restart the application after the setting has been changed."}],"timeline":[{"lang":"en","time":"2026-06-17T18:01:37.602Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-04-25T00:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Cavid (Yes We Hack) for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-21T19:02:39.410894Z","id":"CVE-2026-12547","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-21T19:06:28.077Z"}}]}}}