CVE-2026-55778
CVE-2026-55778 · Parse Server: Stored XSS via non-standard file extension bypassing file upload extension blocklist
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Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1-alpha.11 and 8.6.81, the default fileUpload.fileExtensions blocklist could be bypassed by uploading a file with a non-standard or compound extension and dangerous content type, allowing storage adapters such as S3 and GCS to serve attacker-supplied active content and enable stored cross-site scripting. This issue is fixed in versions 9.9.1-alpha.11 and 8.6.81.
CVSS 2.1 · Niedrig · EPSS 0,6% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: node
Betroffene Produkte und Versionen
parse-server
- Softwareversionen
- >= 9.0.0-alpha.1, < 9.9.1-alpha.11: Betroffen
- < 8.6.81: Betroffen
Keine Korrektur veröffentlicht
parse-server npm
- Betroffene Versionsbereiche
- SEMVER: ≥ 9.0.0, < 9.9.1-alpha.11
Auf 9.9.1-alpha.11 aktualisieren
parse-server npm
- Betroffene Versionsbereiche
- SEMVER: < 8.6.81
Auf 8.6.81 aktualisieren
Originalquellen
- https://github.com/parse-community/parse-server/security/advisories/GHSA-v8x7-r927-cc93
- https://github.com/parse-community/parse-server/pull/10505
- https://github.com/parse-community/parse-server/pull/10506
- https://github.com/parse-community/parse-server/commit/97c6a78d19f976ec756c1295f08a8fccab90799a
- https://github.com/parse-community/parse-server/commit/be12a60d65b6e140481882037fb896b1f951df50
- https://github.com/parse-community/parse-server/releases/tag/8.6.81
- https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.11
- https://nvd.nist.gov/vuln/detail/CVE-2026-55778