CVE-2026-1725
Published: 25 February 2026
Summary
CVE-2026-1725 is a medium-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Gitlab Gitlab. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 16.5th 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-2026-1725 is a denial-of-service vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE), affecting versions from 18.9 prior to 18.9.1. The issue stems from improper resource allocation, mapped to CWE-770 (Allocation of Resources Without Limits or Throttling), and allows an unauthenticated user to trigger a DoS under certain conditions by sending specially crafted requests to a CI jobs API endpoint. It has a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L), indicating medium severity with low availability impact but no confidentiality or integrity effects.
An unauthenticated attacker with network access can exploit this vulnerability with low complexity and no user interaction required. By crafting and sending malicious requests to the affected CI jobs API endpoint, the attacker can cause resource exhaustion, leading to degraded performance or temporary unavailability of the GitLab instance for legitimate users.
GitLab remediated the vulnerability in version 18.9.1, as detailed in their patch release advisory. Additional details are available in the GitLab issue tracker (gitlab.com/gitlab-org/gitlab/-/issues/588338) and the originating HackerOne disclosure report (hackerone.com/reports/3519773). Security practitioners should upgrade to 18.9.1 or later to mitigate the issue.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8723
Vulnerability details
GitLab has remediated an issue in GitLab CE/EE affecting versions from 18.9 before 18.9.1 that could have under certain conditions, allowed an unauthenticated user to cause denial of service by sending specially crafted requests to a CI jobs API endpoint.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct application-layer DoS via crafted API requests causing resource exhaustion (CWE-770), matching T1499.004 Application or System Exploitation.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires protection against or limiting of DoS attacks via resource exhaustion on network-accessible endpoints such as the CI jobs API.
Mandates allocation of resources by quota or priority to prevent the exact CWE-770 condition exploited by unauthenticated crafted requests.
Enforces access restrictions that could deny or constrain unauthenticated requests to the vulnerable CI jobs API endpoint before resource exhaustion occurs.