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 11.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control implements explicit throttling on session allocation, addressing the weakness of allocating resources without limits.
Plan testing exercises resource allocation limits and throttling during simulated failures, directly addressing weaknesses that allow unbounded resource use.
Contingency plan updates ensure recovery strategies address unbounded resource allocation, making it harder for attackers to exploit lack of throttling to cause prolonged outages.
Provides continuity when unbounded resource allocation at the primary site leads to exhaustion and downtime.
Alternate services allow operations to continue when primary allocation of resources lacks limits or throttling.
Explicit planning of security-related actions requires defining limits, windows, and resource allocations, making allocation without throttling far less likely.
Measures of performance include tracking allocation behavior and throttling effectiveness, reducing the window for resource exhaustion attacks.
Imposes an inactivity-based limit on network resource allocation, throttling the number of concurrently held connections.
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).
NVD Description
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…
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GraphQL queries.
Deeper analysisAI
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.
Details
- CWE(s)