{"id":"EUVD-2025-31349","revision":"37ef2a859b36421aa06a1afc0f5add99","records":[{"revision":"37ef2a859b36421aa06a1afc0f5add99","observedAt":"2026-11-07T02:45:09.657+00:00","statement":{"source":"euvd","id":"EUVD-2025-31349","aliases":["CVE-2025-59936","GHSA-qc2q-qhf3-235m"],"title":"get-jwks contains fetch utils for JWKS keys. In versions prior to 11.0.2, a vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism. When the iss (issuer) claim is validated only after keys are retrieved fro…","description":"get-jwks contains fetch utils for JWKS keys. In versions prior to 11.0.2, a vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism. When the iss (issuer) claim is validated only after keys are retrieved from the cache, it is possible for cached keys from an unexpected issuer to be reused, resulting in a bypass of issuer validation. This design flaw enables a potential attack where a malicious actor crafts a pair of JWTs, the first one ensuring that a chosen public key is fetched and stored in the shared JWKS cache, and the second one leveraging that cached key to pass signature validation for a targeted iss value. The vulnerability will work only if the iss validation is done after the use of get-jwks for keys retrieval. This issue has been patched in version 11.0.2.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","score":9.4,"severity":null}],"references":["https://github.com/nearform/get-jwks/security/advisories/GHSA-qc2q-qhf3-235m","https://github.com/nearform/get-jwks/commit/1706a177a80a1759fe68e3339dc5a219ce03ddb9"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-31349","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 27, 2025, 12:22:10 AM","dateUpdated":"Sep 29, 2025, 2:55:22 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-31349","identifiers":["EUVD-2025-31349","CVE-2025-59936","GHSA-qc2q-qhf3-235m"]},"retained":false,"historicalAffected":[]}],"coverage":[]}