Openclaw
CVE-2026-28459
HIGH
GHSA-64qx-vpxx-mvqf
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Lifecycle Timeline
3DescriptionCVE.org
OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.
AnalysisAI
Arbitrary file write in OpenClaw prior to version 2026.2.12 allows authenticated gateway clients to bypass path validation on the sessionFile parameter and write transcript data to any location on the host filesystem. An attacker with valid credentials can repeatedly append data to arbitrary files, potentially corrupting configurations or exhausting disk space to cause denial of service. A patch is available.
Technical ContextAI
Affects Openclaw. OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Auth bypass in OpenClaw voice-call extension before 2026.2.1. EPSS 0.68%. PoC and patch available.
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Same weakness CWE-73 – External Control of File Name or Path
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today