GitLab: Origin Validation Error
CVE-2025-7659 is a critical-severity origin validation error vulnerability in GitLab, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 18.6.6, 18.7.4, 18.8.4 as the first without the flaw, so updating GitLab to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update GitLab to 18.6.6 or 18.7.4 or 18.8.4, whichever matches your release line, or a later version.
- Read the advisory on about.gitlab.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| GitLab | GitLab | 18.2 up to, but not including, 18.6.6; 18.7 up to, but not including, 18.7.4; 18.8 up to, but not including, 18.8.4 | 18.6.6, 18.7.4, 18.8.4 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.0 | High | CNA (gitlab.com) |
| CVSS 3.1 | 9.1 | Critical | NVD |
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to steal tokens and access private repositories by abusing incomplete validation in the Web IDE.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Origin Validation Error
The product does not properly verify that the source of data or communication is valid.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other references
- hackerone.com/reports/3234976Permissions Required
Other vulnerabilities in GitLab
- 7.1 High severity
- 8.2 High severity
- 7.5 High severity
- 10.0 Critical severity
- 10.0 Critical severity
- 7.3 High severity
Recent Origin Validation Error vulnerabilities
- 8.8 High severity
- 9.8 Critical severity
- 8.8 High severity
- 8.1 High severity
- 8.5 High severity
- 7.2 High severity
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