{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121821","assignerOrgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","state":"PUBLISHED","assignerShortName":"LY-Corporation","dateReserved":"2026-11-04T05:50:04.721Z","datePublished":"2026-11-06T07:46:50.787Z","dateUpdated":"2026-11-06T07:46:50.787Z"},"containers":{"cna":{"affected":[{"vendor":"LY Corporation","product":"Armeria","defaultStatus":"unaffected","versions":[{"version":"0.84.0","status":"affected","versionType":"custom","lessThan":"1.43.0"}]}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-942"}]}],"descriptions":[{"lang":"en","value":"A vulnerability has been identified in armeria versions 0.84.0 through 1.42.0, where any-origin CORS policies do not enforce configured path restrictions, allowing an attacker-controlled website visited by an authenticated victim to read sensitive responses from excluded paths when credentials are enabled and the victim's browser sends authentication credentials."}],"references":[{"url":"https://line.github.io/security-advisory-blog/CVE-2026-121821/"},{"url":"https://github.com/line/armeria/security/advisories/GHSA-386q-mrg6-jfj8"}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"providerMetadata":{"orgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","shortName":"LY-Corporation","dateUpdated":"2026-11-06T07:46:50.787Z"}}}}