Vulnerability Details CVE-2026-0958
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.7%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-0958
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cpe:2.3:a:gitlab:gitlab:18.4.0
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cpe:2.3:a:gitlab:gitlab:18.4.1
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cpe:2.3:a:gitlab:gitlab:18.4.2
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cpe:2.3:a:gitlab:gitlab:18.4.3
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cpe:2.3:a:gitlab:gitlab:18.4.4
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cpe:2.3:a:gitlab:gitlab:18.4.5
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cpe:2.3:a:gitlab:gitlab:18.4.6
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cpe:2.3:a:gitlab:gitlab:18.5.0
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cpe:2.3:a:gitlab:gitlab:18.5.1
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cpe:2.3:a:gitlab:gitlab:18.5.2
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cpe:2.3:a:gitlab:gitlab:18.5.3
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cpe:2.3:a:gitlab:gitlab:18.5.4
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cpe:2.3:a:gitlab:gitlab:18.5.5
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cpe:2.3:a:gitlab:gitlab:18.6.0
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cpe:2.3:a:gitlab:gitlab:18.6.1
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cpe:2.3:a:gitlab:gitlab:18.6.2
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cpe:2.3:a:gitlab:gitlab:18.6.3
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cpe:2.3:a:gitlab:gitlab:18.6.4
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cpe:2.3:a:gitlab:gitlab:18.6.5
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cpe:2.3:a:gitlab:gitlab:18.7.0
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cpe:2.3:a:gitlab:gitlab:18.7.1
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cpe:2.3:a:gitlab:gitlab:18.7.2
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cpe:2.3:a:gitlab:gitlab:18.7.3
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cpe:2.3:a:gitlab:gitlab:18.8.0
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cpe:2.3:a:gitlab:gitlab:18.8.1
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cpe:2.3:a:gitlab:gitlab:18.8.2
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cpe:2.3:a:gitlab:gitlab:18.8.3