{"id":"CVE-2026-111755","state":"PUBLISHED","title":"follow-redirects sensitiveHeaders regex escaping can expose credential headers","description":"follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.1, escapeRegex leaves valid header-name metacharacters unescaped in sensitiveHeaders. When an application declares a sensitive header whose name contains ^ or | and follows a cross-origin or HTTPS-to-HTTP redirect, unescaped regular-expression metacharacters prevent the generated filter from matching the declared header name, and the credential header is forwarded to an attacker-controlled redirect target. This issue is fixed in version 1.16.1.","publishedAt":"2026-10-19T17:27:09.215Z","updatedAt":"2026-10-19T18:00:16.343Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["follow-redirects follow-redirects"],"affected":[{"vendor":"follow-redirects","product":"follow-redirects","versions":[{"version":">= 1.16.0, < 1.16.1","status":"affected"}]}],"references":["https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c","https://github.com/follow-redirects/follow-redirects/commit/080a76d0e125b37bf81717368a61d5dc37aa56c8","https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.1"],"weaknesses":["CWE-185","CWE-200"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/111xxx/CVE-2026-111755.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111755","state":"PUBLISHED","datePublished":"2026-10-19T17:27:09.215Z","dateUpdated":"2026-10-19T18:00:16.343Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-16T17:52:09.081Z"},"containers":{"cna":{"title":"follow-redirects sensitiveHeaders regex escaping can expose credential headers","descriptions":[{"lang":"en","value":"follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.1, escapeRegex leaves valid header-name metacharacters unescaped in sensitiveHeaders. When an application declares a sensitive header whose name contains ^ or | and follows a cross-origin or HTTPS-to-HTTP redirect, unescaped regular-expression metacharacters prevent the generated filter from matching the declared header name, and the credential header is forwarded to an attacker-controlled redirect target. This issue is fixed in version 1.16.1."}],"affected":[{"vendor":"follow-redirects","product":"follow-redirects","versions":[{"version":">= 1.16.0, < 1.16.1","status":"affected"}]}],"references":[{"url":"https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c","name":"https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/follow-redirects/follow-redirects/commit/080a76d0e125b37bf81717368a61d5dc37aa56c8","name":"https://github.com/follow-redirects/follow-redirects/commit/080a76d0e125b37bf81717368a61d5dc37aa56c8","tags":["x_refsource_MISC"]},{"url":"https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.1","name":"https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-185","lang":"en","description":"CWE-185: Incorrect Regular Expression","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-19T17:27:09.215Z"},"source":{"advisory":"GHSA-8r9p-f939-6h3c","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-19T17:59:27.677540Z","id":"CVE-2026-111755","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:00:16.343Z"}}]}}}