CVE-2025-12716

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

HIGH
8.7
CVSS Score
Published: December 11, 2025 at 03:33 AM UTC
Updated: October 14, 2026 at 09:10 PM UTC
1 product affected across 1 vendorGitLab

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Severity
HIGH8.7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that, under certain conditions could have allowed an authenticated user to perform unauthorized actions on behalf of another user by creating wiki pages with malicious content.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

18.4.0 ≤ v < 18.4.618.5.0 ≤ v < 18.5.418.6.0 ≤ v < 18.6.218.418.518.6
Affected range stops below 18.4.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 18.5.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 18.6.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

Issue TrackingPermissions RequiredBroken Link
Source: cverecord
https://gitlab.com/gitlab-org/gitlab/-/issues/579548
Technical DescriptionExploitPermissions Required
Source: cverecord
https://hackerone.com/reports/3405832

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitLab
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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