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Mallory
High

Unauthenticated DoS in GitLab internal API endpoints

IdentifiersCVE-2025-14869CWE-400

GitLab CE/EE contains an unauthenticated denial-of-service vulnerability affecting all versions from 18.5 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3. According to the provided content, an attacker can trigger the issue by sending specially crafted payloads to certain internal API endpoints. No vulnerable function or code path is identified in the supplied material, but the flaw is described as reachable without authentication and capable of causing service disruption.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthenticated remote attacker to cause denial of service against affected GitLab instances. The provided context indicates this can disrupt GitLab operations, including internal workflow handling and potentially CI/CD-related processes and normal platform availability.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure of the affected API endpoints by restricting network access to trusted sources, placing GitLab behind filtering or rate-limiting controls, and monitoring for malformed or abusive requests targeting internal API paths. These are interim mitigations only; the provided content identifies upgrading to the fixed versions as the definitive remediation.

Remediation

Patch, then assume compromise.

Upgrade self-managed GitLab CE/EE instances to a fixed release: 18.9.7, 18.10.6, 18.11.3, or later. The supplied content states GitLab released emergency security updates addressing this issue and urged administrators to upgrade immediately. GitLab cloud-hosted platforms were already patched.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GitLabGitlabapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

Unauthenticated DoS in GitLab internal API endpoints (CVE-2025-14869) | Mallory