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6.1

Gollum 5.0-5.1.2: Untrusted File Upload Risk

CVE-2020-35305 · published 4 years ago
Summary

A security issue in Gollum 5.0-5.1.2 allows an attacker to upload malicious files, potentially leading to unauthorized actions or data exposure. This affects users who use the 'New Page' dialog to upload files. To mitigate this risk, update to the latest version of Gollum or remove the 'filename' parameter from the 'New Page' dialog.

What to do
  • Update tom preston-werner gollum to version 5.1.2.
Affected software
Ecosystem VendorProductAffected versions
rubygems tom preston-werner gollum >= 5.0, < 5.1.2
Fix: upgrade to 5.1.2
– gollum_project gollum >= 5.0.0, <= 5.1.2
cpe:2.3:a:gollum_project:gollum:*:*:*:*:*:*:*:*
Original advisory text
Cross site scripting (XSS) in gollum 5.0 to 5.1.2 via the filename parameter to the 'New Page' dialog.
Cross site scripting (XSS) in gollum 5.0 to 5.1.2 via the filename parameter to the 'New Page' dialog.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
6.1 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published15 Jul 2022
Updated4 Nov 2026
First seen6 Mar 2026
Sources
GHSA-fj2w-qmjp-3rjm · GHSA
CVE-2020-35305 · NVD
CVE-2020-35305 · MITRE
CVE-2020-35305 · OSV
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