Denial of Service in GitLab CE/EE Grape API JSON parsing middleware
CVE-2026-7250 is a denial-of-service vulnerability in GitLab Community Edition and Enterprise Edition caused by improper input validation in the API request parsing middleware, specifically the Grape API JSON parsing middleware. GitLab states that under certain conditions, malformed or specially crafted API input can be processed in a way that allows an unauthenticated attacker to trigger a service disruption. The issue affects GitLab CE/EE all versions from 12.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Recent activity
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Denial-of-service vulnerability in GitLab caused by improper input validation in the Grape API JSON parsing middleware, exploitable by unauthenticated users.
Denial-of-service vulnerability in GitLab CE/EE Grape API JSON parsing middleware that could allow an unauthenticated attacker to disrupt service via improper input validation.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.