Vulnerability Details CVE-2026-35640
OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.3%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-35640
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cpe:2.3:a:openclaw:openclaw:0.1.0
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cpe:2.3:a:openclaw:openclaw:0.1.1
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cpe:2.3:a:openclaw:openclaw:0.1.2
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cpe:2.3:a:openclaw:openclaw:0.1.3
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cpe:2.3:a:openclaw:openclaw:1.0.4
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cpe:2.3:a:openclaw:openclaw:1.1.0
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cpe:2.3:a:openclaw:openclaw:1.2.0
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cpe:2.3:a:openclaw:openclaw:1.2.1
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cpe:2.3:a:openclaw:openclaw:1.2.2
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cpe:2.3:a:openclaw:openclaw:1.3.0
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cpe:2.3:a:openclaw:openclaw:2.0.0
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cpe:2.3:a:openclaw:openclaw:2026.1.10
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cpe:2.3:a:openclaw:openclaw:2026.1.11
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cpe:2.3:a:openclaw:openclaw:2026.1.11-1
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cpe:2.3:a:openclaw:openclaw:2026.1.11-2
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cpe:2.3:a:openclaw:openclaw:2026.1.11-3
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cpe:2.3:a:openclaw:openclaw:2026.1.12
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cpe:2.3:a:openclaw:openclaw:2026.1.12-2
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cpe:2.3:a:openclaw:openclaw:2026.1.13
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cpe:2.3:a:openclaw:openclaw:2026.1.14-1
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cpe:2.3:a:openclaw:openclaw:2026.1.15
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cpe:2.3:a:openclaw:openclaw:2026.1.16-2
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cpe:2.3:a:openclaw:openclaw:2026.1.20
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cpe:2.3:a:openclaw:openclaw:2026.1.21
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cpe:2.3:a:openclaw:openclaw:2026.1.22
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cpe:2.3:a:openclaw:openclaw:2026.1.23
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cpe:2.3:a:openclaw:openclaw:2026.1.24
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cpe:2.3:a:openclaw:openclaw:2026.1.24-1
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cpe:2.3:a:openclaw:openclaw:2026.1.29
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cpe:2.3:a:openclaw:openclaw:2026.1.30
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cpe:2.3:a:openclaw:openclaw:2026.1.5
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cpe:2.3:a:openclaw:openclaw:2026.1.5-1
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cpe:2.3:a:openclaw:openclaw:2026.1.5-2
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cpe:2.3:a:openclaw:openclaw:2026.1.5-3
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cpe:2.3:a:openclaw:openclaw:2026.1.8
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cpe:2.3:a:openclaw:openclaw:2026.1.9
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cpe:2.3:a:openclaw:openclaw:2026.2.1
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cpe:2.3:a:openclaw:openclaw:2026.2.12
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cpe:2.3:a:openclaw:openclaw:2026.2.13
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cpe:2.3:a:openclaw:openclaw:2026.2.14
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cpe:2.3:a:openclaw:openclaw:2026.2.15
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cpe:2.3:a:openclaw:openclaw:2026.2.17
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cpe:2.3:a:openclaw:openclaw:2026.2.19
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cpe:2.3:a:openclaw:openclaw:2026.2.2
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cpe:2.3:a:openclaw:openclaw:2026.2.3
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cpe:2.3:a:openclaw:openclaw:2026.2.6
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cpe:2.3:a:openclaw:openclaw:2026.2.6-1
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cpe:2.3:a:openclaw:openclaw:2026.2.6-2
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cpe:2.3:a:openclaw:openclaw:2026.2.6-3
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cpe:2.3:a:openclaw:openclaw:2026.2.9