What is CVE-2025-10858?

CVE-2025-10858 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-09-26.

How severe is CVE-2025-10858?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-10858 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Gitlab

CVE-2025-10858

An issue was discovered in GitLab CE/EE affecting all versions before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1 that allows unauthenticated users to cause a Denial of Service (DoS) condition while uploading specifically crafted large JSON files.

EPSS: 0.006 (43.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gitlab — versions 18.4.0, 18.3, 18.4

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

cve@gitlab.com (issue-tracking, permissions-required, Broken Link)

Frequently asked questions

What is CVE-2025-10858?: CVE-2025-10858 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-09-26.
How severe is CVE-2025-10858?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-10858 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.