{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121820","assignerOrgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","state":"PUBLISHED","assignerShortName":"LY-Corporation","dateReserved":"2026-11-04T05:50:04.721Z","datePublished":"2026-11-06T07:46:48.261Z","dateUpdated":"2026-11-06T07:46:48.261Z"},"containers":{"cna":{"affected":[{"vendor":"LY Corporation","product":"Armeria","defaultStatus":"affected","versions":[{"version":"1.43.0","status":"unaffected","versionType":"custom","lessThan":"*"}]}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-409"}]}],"descriptions":[{"lang":"en","value":"A vulnerability has been identified in armeria-saml versions prior to 1.43.0, where the HTTP-Redirect binding decoder decompresses attacker-supplied SAML messages without limiting the output size before signature validation, allowing an unauthenticated remote attacker to exhaust server memory and cause a denial of service."}],"references":[{"url":"https://line.github.io/security-advisory-blog/CVE-2026-121820/"},{"url":"https://github.com/line/armeria/security/advisories/GHSA-6hgp-j5h7-33m3"}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"}}],"providerMetadata":{"orgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","shortName":"LY-Corporation","dateUpdated":"2026-11-06T07:46:48.261Z"}}}}