{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121819","assignerOrgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","state":"PUBLISHED","assignerShortName":"LY-Corporation","dateReserved":"2026-11-04T05:50:04.721Z","datePublished":"2026-11-06T07:46:45.370Z","dateUpdated":"2026-11-06T07:46:45.370Z"},"containers":{"cna":{"affected":[{"vendor":"LY Corporation","product":"Armeria","defaultStatus":"unaffected","versions":[{"version":"1.40","status":"affected","versionType":"custom","lessThan":"1.43.0"}]}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-59"}]}],"descriptions":[{"lang":"en","value":"A vulnerability has been identified in armeria-xds versions 1.40.0 through 1.42.0, where DataSourcePolicy checks filename containment without resolving symbolic links, allowing a compromised or semi-trusted xDS control plane to cause the xDS client to read files outside configured allowed root directories when a symbolic link inside an allowed directory points outside it. In deployments using a credential injector, header-compatible text secrets may be exposed to an attacker-observable upstream."}],"references":[{"url":"https://line.github.io/security-advisory-blog/CVE-2026-121819/"},{"url":"https://github.com/line/armeria/security/advisories/GHSA-m64h-m6r5-6jrx"}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","baseScore":5.9,"baseSeverity":"MEDIUM"}}],"providerMetadata":{"orgId":"657f3255-0560-4aed-82e4-7f579ec6acfb","shortName":"LY-Corporation","dateUpdated":"2026-11-06T07:46:45.370Z"}}}}