{"id":"CVE-2026-31908","state":"PUBLISHED","title":"Apache APISIX: forward auth plugin allows header injection","description":"Header injection vulnerability in Apache APISIX.\n\nThe attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.\nThis issue affects Apache APISIX: from 2.12.0 through 3.15.0.\n\nUsers are recommended to upgrade to version 3.16.0, which fixes the issue.","publishedAt":"2026-04-14T08:06:18.026Z","updatedAt":"2026-04-16T12:06:00.176Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache APISIX"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache APISIX","defaultStatus":"unaffected","versions":[{"version":"2.12.0","status":"affected","lessThanOrEqual":"3.15.0","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b","http://www.openwall.com/lists/oss-security/2026/04/14/3"],"weaknesses":["CWE-75"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31908.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31908","state":"PUBLISHED","datePublished":"2026-04-14T08:06:18.026Z","dateUpdated":"2026-04-16T12:06:00.176Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-03-10T08:20:51.948Z"},"containers":{"cna":{"title":"Apache APISIX: forward auth plugin allows header injection","descriptions":[{"lang":"en","value":"Header injection vulnerability in Apache APISIX.\n\nThe attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.\nThis issue affects Apache APISIX: from 2.12.0 through 3.15.0.\n\nUsers are recommended to upgrade to version 3.16.0, which fixes the issue."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache APISIX","defaultStatus":"unaffected","versions":[{"version":"2.12.0","status":"affected","lessThanOrEqual":"3.15.0","versionType":"semver"}]}],"references":[{"url":"https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-75","description":"CWE-75 Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-04-14T08:06:18.026Z"},"credits":[{"lang":"en","type":"reporter","value":"SeungMyung Lee"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/04/14/3"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-04-14T08:37:15.159Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-16T11:42:56.365669Z","id":"CVE-2026-31908","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-16T12:06:00.176Z"}}]}}}