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🛡️ CVE-2025-11990 — gitlab

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-177 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper Handling of URL Encoding (Hex Encoding) in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated user to gain CSRF tokens by exploiting improper input validation in repository references combined with redirect handling weaknesses.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: None.
  • Availability impact: None.

Weakness class

CVE-2025-11990 is classified as CWE-177: Improper Handling of URL Encoding (Hex Encoding). The product does not properly handle when all or part of an input has been URL encoded.

Affected software

CVE-2025-11990 is recorded against 1 package.

  • gitlab

Timeline and source

Published on 20 November 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

about.gitlab.com (Web)
gitlab.com (Web)
hackerone.com (Web)
nvd.nist.gov (Web)

Other advisories for this package

gitlab has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-177: Improper Handling of URL Encoding (Hex Encoding)) in other software:

CVE-2025-11990 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE CWE-177
Public Exploit ✅ No
Source OSV
Published 2025-11-20
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
gitlab — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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