{"id":"CVE-2026-49231","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-49231","generatedAt":"2026-10-28T08:09:59.444Z","title":"Authentication Bypass by Spoofing vulnerability in opa plugin.","description":"Authentication Bypass by Spoofing vulnerability in opa plugin.\n\nAn attacker could relay spoofed identity headers to upstream capitalising on non-default configuration in opa plugin.\n\nThis could allow the attacker to assume higher privileges on the upstream service.\nThis issue affects Apache APISIX: from 3.5.0 through 3.16.0.\n\nUsers are recommended to upgrade to version 3.17.0, which fixes the issue.","published":"2026-06-19T14:16:24.000Z","lastModified":"2026-10-26T11:10:00.000Z","status":"Analyzed","sourceIdentifier":"security@apache.org","cvss":{"version":"4.0","score":2.3,"severity":"LOW","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-290"],"affected":["apache/apisix"],"epss":{"score":0.00575,"percentile":0.47254,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.57%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://lists.apache.org/thread/s1jd1vxm59p6ghx47xhmpjdk1cobo4hn","tags":["Vendor Advisory","Mailing List"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/06/19/13","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49231","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}