GitLab CE/EE <=18.10.1 DoS via excessive webhook config (CVE-2025-13078)
CVE-2025-13078 Published on March 25, 2026
Improper Validation of Specified Quantity in Input in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to cause a denial of service due to excessive resource consumption when processing certain webhook configuration inputs.
Vulnerability Analysis
CVE-2025-13078 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2025-13078. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Improper Validation of Specified Quantity in Input
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
Products Associated with CVE-2025-13078
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Affected Versions
GitLab:- Version 16.10 and below 18.8.7 is affected.
- Version 18.9 and below 18.9.3 is affected.
- Version 18.10 and below 18.10.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.