Cyber Resilience

CVE-2025-11865

Access Control in Gitlab 18.1.0 – 18.3.6

Access Control
Published
15 November 2025
Modified
19 November 2025
Patch / advisory
View advisory
CVSS Score v3.1 4.3
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:L/A:N
EPSS Score 0.0022 13th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-11865 is a medium-severity Incorrect Authorization (CWE-863) vulnerability in Gitlab Gitlab. Its CVSS base score is 4.3 (Medium).

Operationally, ranked at the 13th 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 AC-3 (Access Enforcement) and AC-24 (Access Control Decisions) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

An issue has been discovered in GitLab EE affecting all versions from 18.1 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that, under certain circumstances, could have allowed an attacker to remove Duo flows of another user.

CWE(s)
CWE-863

Related Threats

CVEs Like This One

CVE-2024-7296Same product: Gitlab Gitlab
CVE-2025-0516Same product: Gitlab Gitlab
CVE-2026-2726Same product: Gitlab Gitlab
CVE-2025-6168Same product: Gitlab Gitlab
CVE-2023-4658Same product: Gitlab Gitlab
CVE-2026-6269Same product: Gitlab Gitlab
CVE-2023-5106Same product: Gitlab Gitlab
CVE-2023-3979Same product: Gitlab Gitlab
CVE-2023-3509Same product: Gitlab Gitlab
CVE-2024-6323Same product: Gitlab Gitlab

Affected Assets

gitlab
gitlab
18.1.0 — 18.3.6 · 18.4.0 — 18.4.4 · 18.5.0 — 18.5.2

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • AC-6 Least Privilege
  • AC-24 Access Control Decisions
Detect
Catch it (NIST detect / respond)

—

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

—

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Directly enforces authorization checks so that one user cannot remove another user's Duo flows.

AC-6 Least Privilege partial match
prevent

Limits privileges so users cannot perform delete operations on resources they do not own.

AC-24 Access Control Decisions partial match
prevent

Ensures access-control decisions are made consistently before any modification of user-specific Duo flows.

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.AA-05 mostly match
prevents

Defining, enforcing, and reviewing access authorizations and least privilege directly prevents incorrect authorization checks.

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.

A.5.15 Access control partial match
prevents

Requiring consistency between access rights and classification plus formal approval steps ensures that the authorization logic correctly distinguishes between entities that should and should not be granted access.

A.5.18 Access rights partial match
prevents

Enforcing policy-driven approval and role-change reviews stops incorrect or stale authorization decisions from remaining in effect after job changes or terminations.

A.8.3 Information access restriction partial match
prevents

By tying access rights to identity, device, location and classification, the control reduces the likelihood that an authorization decision will be based on an incorrect or bypassed policy.

References