High severity · published Mar 5, 2026
CVE-2026-28459
OpenClaw < 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenClaw · OpenClaw
before 2026.2.12 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28459
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28459
Patch
https://github.com/openclaw/openclaw/commit/25950bcbb8ba4d8cde002557f6e27c219ae4deda
Patch
https://github.com/openclaw/openclaw/commit/4199f9889f0c307b77096a229b9e085b8d856c26
Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-64qx-vpxx-mvqf
Third Party Advisory
https://www.vulncheck.com/advisories/openclaw-arbitrary-file-write-via-untrusted-sessionfile-path
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