{"identifier":"CVE-2026-49872","cve":{"id":"CVE-2026-49872","description":"Improper Authentication vulnerability in Apache APISIX.\n\nWhen the cas-auth plugin is used in a route, an attacker can possibly authenticate itself with credentials from a different source.\nThis issue affects Apache APISIX: from 3.0.0 through 3.16.0.\n\nUsers are recommended to upgrade to version 3.17.0, which fixes the issue.","published":"2026-06-19T14:16:23.917000+00:00","modified":"2026-10-26T11:10:00.157000+00:00","status":"Analyzed","score":5.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_version":"4.0","affected":[{"criteria":"cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"3.17.0"}],"weaknesses":["CWE-287"],"references":[{"url":"https://lists.apache.org/thread/bzjpo60ygxo7kxdqf7vw3l5zw2lh6m5k","source":"security@apache.org","tags":["Vendor Advisory","Mailing List"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/19/15","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV40":[{"source":"security@apache.org","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-22T16:28:11.351885Z","id":"CVE-2026-49872","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"3.17.0","matchCriteriaId":"46461E65-7CF7-491D-A104-C4A6A08C4527"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:25:47.498079+00:00","exploited":false,"kev_stale":false,"products":["apache / apisix"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00526,"percentile":0.44372,"date":"2026-10-27","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"lists.apache.org","source_url":"https://lists.apache.org/thread/bzjpo60ygxo7kxdqf7vw3l5zw2lh6m5k","investigate_url":"https://investigate.aeglixmind.com/#lists.apache.org"},{"domain":"www.openwall.com","source_url":"http://www.openwall.com/lists/oss-security/2026/06/19/15","investigate_url":"https://investigate.aeglixmind.com/#www.openwall.com"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-49872","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-49872","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-49872","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. 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