CVE-2026-0958
Analyzed Analyzed - Analysis Complete
Denial of Service via JSON Validation Bypass in GitLab

Publication date: 2026-02-11

Last updated on: 2026-02-13

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through memory or CPU exhaustion by bypassing JSON validation middleware limits.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-02-11
Last Modified
2026-02-13
Generated
2026-06-16
AI Q&A
2026-02-11
EPSS Evaluated
2026-06-15
NVD
CVE-2026-0958
EUVD
EUVD-2026-7060
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
gitlab gitlab From 18.7.0 (inc) to 18.7.4 (exc)
gitlab gitlab From 18.8.0 (inc) to 18.8.4 (exc)
gitlab gitlab From 18.7.0 (inc) to 18.7.4 (exc)
gitlab gitlab From 18.8.0 (inc) to 18.8.4 (exc)
gitlab gitlab From 18.4.0 (inc) to 18.6.6 (exc)
gitlab gitlab From 18.4.0 (inc) to 18.6.6 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-436 Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability in GitLab CE/EE affects versions from 18.4 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4. It allows an unauthenticated user to bypass JSON validation middleware limits, which can lead to denial of service by exhausting memory or CPU resources.

Impact Analysis

The impact of this vulnerability is a denial of service condition. An attacker who is not authenticated can exploit it to consume excessive memory or CPU resources on the affected GitLab server, potentially causing the service to become unavailable.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade GitLab CE/EE to a fixed version. Specifically, update to version 18.6.6 or later if you are using the 18.4 to 18.6 series, version 18.7.4 or later if you are using the 18.7 series, or version 18.8.4 or later if you are using the 18.8 series.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-0958. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart