CVE-2025-8099
Published: 11 February 2026
Summary
CVE-2025-8099 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Gitlab Gitlab. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 12.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SC-5 (Denial-of-service Protection) and SC-6 (Resource Availability).
Deeper analysis
CVE-2025-8099 is a denial-of-service vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE), affecting all versions from 10.8 prior to 18.6.6, 18.7 prior to 18.7.4, and 18.8 prior to 18.8.4. The issue stems from a failure to properly handle repeated GraphQL queries under certain conditions, classified under CWE-770 (Allocation of Resources Without Limits or Throttling). It has a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high availability impact with network accessibility and no privileges required.
An unauthenticated attacker can exploit this vulnerability over the network with low complexity by sending repeated GraphQL queries to a vulnerable GitLab instance. Successful exploitation results in denial of service, potentially disrupting service availability for legitimate users without impacting confidentiality or integrity.
GitLab has remediated the issue through patch releases, including GitLab 18.8.4, as detailed in their release notes. Security practitioners should upgrade to GitLab 18.6.6, 18.7.4, 18.8.4, or later versions. Additional details are available in the GitLab security issue tracker at https://gitlab.com/gitlab-org/gitlab/-/issues/557165 and the originating HackerOne report at https://hackerone.com/reports/3240210.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-207424
Vulnerability details
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.8 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions, could have allowed an unauthenticated user to cause denial of service by sending repeated…
more
GraphQL queries.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE enables unauthenticated network exploitation of a public-facing GraphQL endpoint (T1190) to perform service/application exhaustion via repeated queries (T1499.002/003).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SC-5 directly implements denial-of-service protections at system entry points to prevent resource exhaustion from repeated unauthenticated GraphQL queries.
SC-6 enforces resource allocation limits by user, role, or application to mitigate depletion of resources due to excessive GraphQL query volume.
SI-9 restricts information inputs at boundaries specifically to prevent DoS attacks like the repeated GraphQL queries causing this vulnerability.