Cyber Resilience

CVE-2025-12576

DoS in Gitlab 9.3.0 – 18.7.6

Published
11 March 2026
Modified
18 March 2026
Patch / advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0039 31th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-12576 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, ranked at the 31th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-5 (Denial-of-service Protection) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.3 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that under certain conditions could have allowed an authenticated user to cause a denial of service due to…

more

improper handling of webhook response data.

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-5963Same product: Gitlab Gitlab
CVE-2024-2454Same product: Gitlab Gitlab
CVE-2025-11042Same product: Gitlab Gitlab
CVE-2023-4912Same product: Gitlab Gitlab
CVE-2025-10858Same product: Gitlab Gitlab
CVE-2025-8099Same product: Gitlab Gitlab
CVE-2025-3111Same product: Gitlab Gitlab
CVE-2025-0639Same product: Gitlab Gitlab
CVE-2025-10497Same product: Gitlab Gitlab
CVE-2025-1477Same product: Gitlab Gitlab

Affected Assets

gitlab
gitlab
9.3.0 — 18.7.6 · 9.3.0 — 18.7.6 · 18.8.0 — 18.8.6

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SC-5 Denial-of-service Protection
  • SI-10 Information Input Validation
  • SC-6 Resource Availability
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V15.4.4

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires protections that limit or prevent denial-of-service conditions caused by unbounded webhook response processing.

prevent

Mandates validation of all input (including webhook responses) to block malformed or excessive data that leads to resource exhaustion.

prevent

Ensures availability of system resources by enforcing limits on allocation, mitigating the CWE-770 weakness exploited via webhooks.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.IR-04 mostly match
degrades

Monitoring capacity and taking action to maintain availability directly reduces unchecked resource allocation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

detects

Baseline comparison of CPU, memory and bandwidth usage helps surface uncontrolled resource allocations before they cause service degradation.

prevents

Capacity projections and elasticity measures ensure that allocation requests are bounded and can be throttled, reducing the window in which an attacker can force unbounded resource reservations.

mitigates

Defining retention periods and deletion schedules for backup copies prevents indefinite accumulation of data on storage media without corresponding resource-management controls.

mitigates

Architectural redundancy and automatic failover limit the impact of an attacker who forces excessive allocations, because spare capacity can absorb the load until the primary instance recovers.

none

Documented incident response procedures that include activation of continuity plans and controlled recovery help ensure that resource consumption triggered by an incident is bounded and managed rather than left unbounded.

none

Mandating tested continuity procedures that preserve or replace resource-limiting controls prevents an attacker from exploiting the absence of throttling mechanisms during an outage.

References