Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 18.6.3, and 18.7 before 18.7.1 that could have allowed an unauthenticated user to execute arbitrary code in the context of an authenticated user's browser by convincing the legitimate user to visit a specially crafted webpage.
What this means
In plain English
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 18.6.3, and 18.7 before 18.7.1 that could have allowed an unauthenticated user to execute arbitrary code in the context of an authenticated user's browser by convincing the legitimate user to visit a specially crafted webpage. The official description indicates that exploitation does not require prior authentication. Successful exploitation can let an attacker run code in the security context of the affected service or device.
Vulnerable items
- GitLab — GitLab is a software-development platform that hosts source code and CI/CD workflows.
Recommended action
Primary action: update to a vendor-listed fixed release: 18.6.3, 18.7.1.
Rewritten locally from the scraped official advisory data above; no generative API is used. The vendor advisory is authoritative.
- GitLab 18.6 before 18.6.3
- GitLab 18.7 before 18.7.1
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- 18.6.3
- 18.7.1
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 18.6.3, 18.7.1. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Discussion(0)
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