Answer in brief
CVE-2025-8405 records a High severity (CVSS 7.7) vulnerability in Improper Encoding or Escaping of Output in GitLab. The current sources do not mark it as known exploited. The current feed maps GitLab/GitLab (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps GitLab/GitLab (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | Not reported | Not reported |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| GitLab/GitLabgeneric | >=17.1 <18.4.6 || >=18.5 <18.5.4 || >=18.6 <18.6.2 | 18.4.6, 18.5.4, 18.6.2 |
Published upstream
Dec 11, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 22, 2026
GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.
Quoted source text, attributed separately from HOL analysis.