{"id":"EUVD-2026-36539","revision":"0e0fc63a772e474796772e3f6dc91448","records":[{"revision":"0e0fc63a772e474796772e3f6dc91448","observedAt":"2026-10-30T09:00:06.153+00:00","statement":{"source":"euvd","id":"EUVD-2026-36539","aliases":["CVE-2026-53724","GHSA-7wqv-xjf3-x35v"],"title":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.79 and 9.9.1-alpha.4, the default file upload extension blocklist can be bypassed by appending a trailing dot to a…","description":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.79 and 9.9.1-alpha.4, the default file upload extension blocklist can be bypassed by appending a trailing dot to a filename whose extension would otherwise be blocked (e.g. poc.svg.). The trailing dot causes the extension parser to extract an empty string, which short-circuits the blocklist check, and the attacker-controlled Content-Type is forwarded to the storage adapter unchanged. Storage adapters that persist and serve the provided Content-Type (such as S3 or GCS) then serve the file with an active type such as image/svg+xml, enabling stored XSS when a victim opens the file URL. The default GridFS adapter is not affected because it sets X-Content-Type-Options: nosniff on responses. This issue has been patched in versions 8.6.79 and 9.9.1-alpha.4.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N","score":2.1,"severity":null}],"references":["https://github.com/parse-community/parse-server/security/advisories/GHSA-7wqv-xjf3-x35v","https://github.com/parse-community/parse-server/pull/10489","https://github.com/parse-community/parse-server/pull/10490"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-36539","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 12, 2026, 6:34:38 PM","dateUpdated":"Jun 12, 2026, 8:01:13 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-2026-36539","identifiers":["EUVD-2026-36539","CVE-2026-53724","GHSA-7wqv-xjf3-x35v"]},"retained":false,"historicalAffected":[]}],"coverage":[]}