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8.7

CVE-2023-6033: GitLab lets attackers run scripts in users' browsers

CVE-2023-6033 · published 2 years ago
Summary

GitLab's connection to Jira does not properly clean data entered in its settings, so a malicious actor could place hidden code that runs in a viewer's web browser. This can let them steal information or impersonate the user. Upgrade to the latest GitLab release that includes the fix, or apply the vendor's recommended patch as soon as possible.

What to do
  • Update gitlab to version 16.6.1.
Affected software
Ecosystem VendorProductAffected versions
Bitnami – gitlab >= 16.6.0, < 16.6.1
Fix: upgrade to 16.6.1
– gitlab gitlab >= 15.10, < 16.6.1
>= 16.4.0, < 16.4.3
>= 16.5.0, < 16.5.3
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
Original advisory text
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Improper neutralization of input in Jira integration configuration in GitLab CE/EE, affecting all versions from 15.10 prior to 16.6.1, 16.5 prior to 16.5.3, and 16.4 prior to 16.4.3 allows attacker to execute javascript in victim's browser.
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
8.7 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published1 Dec 2023
Updated4 Nov 2026
First seen10 Sep 2026
Sources
CVE-2023-6033 · NVD
CVE-2023-6033 · OSV
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