CVE-2026-55778

N/A Unknown
Published: July 08, 2026 Modified: July 08, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/parse-community/parse-server/commit/97c6a78d19f976ec756c1295f08a8fccab90799a
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/commit/be12a60d65b6e140481882037fb896b1f951df50
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/pull/10505
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/pull/10506
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/releases/tag/8.6.81
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.11
Source: security-advisories@github.com
https://github.com/parse-community/parse-server/security/advisories/GHSA-v8x7-r927-cc93
Source: security-advisories@github.com

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-434

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