CVE-2026-55778
NONE—CVSS v3
—CVSS v2
0.41%
EPSS (exploit probability)
CWE-434CWE
Description
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.
Affected routers (0)
No routers currently mapped to this CVE in our database.