{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31908","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-03-10T08:20:51.948Z","datePublished":"2026-04-14T08:06:18.026Z","dateUpdated":"2026-04-16T12:06:00.176Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Apache APISIX","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"3.15.0","status":"affected","version":"2.12.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"reporter","value":"SeungMyung Lee"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Header injection vulnerability in Apache APISIX.</p><span style=\"background-color: rgb(255, 255, 255);\">The attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.</span><br><p>This issue affects Apache APISIX: from 2.12.0 through 3.15.0.</p><p>Users are recommended to upgrade to version 3.16.0, which fixes the issue.</p>"}],"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."}],"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":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-04-14T08:06:18.026Z"},"references":[{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b"}],"source":{"discovery":"UNKNOWN"},"title":"Apache APISIX: forward auth plugin allows header injection","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":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-04-14T08:37:15.159Z"}},{"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"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-16T12:06:00.176Z"}}]}}