{"id":"CVE-2026-67435","state":"PUBLISHED","title":"linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect","description":"linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.","publishedAt":"2026-07-29T19:39:19.088Z","updatedAt":"2026-07-29T19:55:54.318Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Linuxfabrik monitoring-plugins"],"affected":[{"vendor":"Linuxfabrik","product":"monitoring-plugins","versions":[{"version":"< 6.0.0","status":"affected"}]}],"references":["https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-4jc5-g844-4x33","https://github.com/Linuxfabrik/lib/commit/6573ff9347e541200305d278d2663d2e54e052ff","https://github.com/Linuxfabrik/lib/releases/tag/v6.0.0"],"weaknesses":["CWE-200","CWE-918"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/67xxx/CVE-2026-67435.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67435","state":"PUBLISHED","datePublished":"2026-07-29T19:39:19.088Z","dateUpdated":"2026-07-29T19:55:54.318Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-29T15:07:24.991Z"},"containers":{"cna":{"title":"linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect","descriptions":[{"lang":"en","value":"linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0."}],"affected":[{"vendor":"Linuxfabrik","product":"monitoring-plugins","versions":[{"version":"< 6.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-4jc5-g844-4x33","name":"https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-4jc5-g844-4x33","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Linuxfabrik/lib/commit/6573ff9347e541200305d278d2663d2e54e052ff","name":"https://github.com/Linuxfabrik/lib/commit/6573ff9347e541200305d278d2663d2e54e052ff","tags":["x_refsource_MISC"]},{"url":"https://github.com/Linuxfabrik/lib/releases/tag/v6.0.0","name":"https://github.com/Linuxfabrik/lib/releases/tag/v6.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-29T19:39:19.088Z"},"source":{"advisory":"GHSA-4jc5-g844-4x33","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T19:55:39.359597Z","id":"CVE-2026-67435","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":"2026-07-29T19:55:54.318Z"}}]}}}