CVE-2026-61448 (GCVE-0-2026-61448)

Vulnerability from cvelistv5 – Published: 2026-07-11 13:01 – Updated: 2026-07-14 22:03
VLAI
Title
Parse Server 9.0.0 Stored XSS via malformed Content-Type
Summary
Parse Server is affected by a stored cross-site scripting (XSS) vulnerability in versions >= 9.0.0, < 9.10.0-alpha.2 and <= 8.6.83. When an uploaded file's extension is not recognized by the mime package, Parse Server preserves the client-supplied Content-Type. A malformed Content-Type that is not a valid type/subtype media type (e.g., 'image', 'image/', or 'image//svg+xml') bypasses the fileUpload.fileExtensions blocklist and is stored unchanged. On storage adapters that persist and serve the uploaded Content-Type (such as Amazon S3, Google Cloud Storage, or Azure Blob Storage), a browser cannot parse the malformed value and falls back to MIME-sniffing; a file whose body begins with HTML is rendered as HTML, executing embedded script in the application's origin against other users who open the file URL. The default GridFS storage adapter is not affected. Fixed in 9.10.0-alpha.2 and 8.6.84.
Severity
2.1 (Low)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 16:09 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6929 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
parse-community parse-server Affected: 9.0.0 , < 9.10.0-alpha.2 (semver)
Unaffected: 9.10.0-alpha.2 (semver)
guessed Create a notification for this product.
parse-community parse-server Affected: 0 , < 8.6.84 (semver)
Unaffected: 8.6.84 (semver)
guessed Create a notification for this product.
Date Public
2026-06-25 00:00
Credits
CyberKareem mtrezza
Show details on NVD website
To clipboard 

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