Openclaw
CVE-2026-28459
HIGH
GHSA-64qx-vpxx-mvqf
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as gateway client
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ExploitSupply malicious sessionFile path parameter
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ExecutionWrite transcript data to arbitrary filesystem location
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ImpactCorrupt configuration files or exhaust disk space
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File name/path control
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| Exploitation Conditions | Authenticated access to OpenClaw gateway client required. OpenClaw versions prior to 2026.2.12 with sessionFile path validation disabled. Attacker must possess valid gateway client credentials. |
| Impact | CVSS 7.1 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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.
Earlier versions of this analysis (1)
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. [CVSS 7.1 HIGH]
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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.
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- Exploit and PoC references, threat intelligence from 22 sources
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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
Lifecycle Timeline
2DescriptionCVE.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.
Executive ViewAI
OpenClaw gateway installations are vulnerable to unauthorized file writes on production servers when accessed by authenticated users, potentially leading to system compromise, data corruption, or service disruption. Organizations running affected versions must prioritize patching to prevent insider threats and compromised account exploitation.
Apply vendor patch. If immediate patching is not feasible: (1) Restrict gateway client authentication to essential users only via access controls; (2) Implement filesystem write monitoring on OpenClaw process directories; (3) Run OpenClaw with least-privilege service accounts and restricted directory permissions; (4) Monitor sessionFile parameter usage in gateway logs for suspicious paths.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
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Exploit-DB