CVE-2026-1458
Published: 11 February 2026
Summary
CVE-2026-1458 is a medium-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Gitlab Gitlab. Its CVSS base score is 6.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 11.5th 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.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
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.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE enables remote exploitation of public-facing GitLab app (T1190) via malicious uploads, directly causing application DoS through resource exhaustion (T1499.004).
NVD Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.0 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 uploading malicious…
more
files.
Deeper analysisAI
CVE-2026-1458 is a denial-of-service vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE), affecting all versions from 8.0 prior to 18.6.6, 18.7 prior to 18.7.4, and 18.8 prior to 18.8.4. The issue stems from CWE-770 (Allocation of Resources Without Limits or Throttling) and CWE-434 (Unrestricted Upload of File with Dangerous Type), allowing malicious file uploads under certain conditions to trigger resource exhaustion. It has a CVSS v3.1 base score of 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H), indicating medium severity with high impact on availability.
An attacker with low privileges (PR:L per CVSS, though described as potentially unauthenticated under specific conditions) can exploit this remotely over the network with low complexity and no user interaction required. By uploading specially crafted malicious files, the attacker triggers a denial-of-service condition, consuming excessive server resources and disrupting service availability for legitimate users without impacting confidentiality or integrity.
GitLab has remediated the vulnerability through patch releases, including GitLab 18.8.4 as detailed in their release notes. Security practitioners should upgrade affected instances to GitLab 18.6.6, 18.7.4, 18.8.4, or later versions. Additional details are available in the GitLab issue tracker (gitlab.com/gitlab-org/gitlab/-/issues/587698) and the originating HackerOne report (hackerone.com/reports/3517644).
Details
- CWE(s)