Medium severity · published Sep 26, 2026
CVE-2026-100536
OpenClaw before 2026.8.1 Path Traversal via Structured Attachments
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
OpenClaw versions before 2026.8.1 fail to validate all source fields in structured message attachments, allowing attackers to hide unvalidated host paths behind allowed attachment sources. Attackers can exploit this by providing multiple source fields to bypass sandbox path validation and cause Telegram delivery to read and send known host files that would otherwise be rejected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenClaw · OpenClaw
before 2026.8.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100536
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100536
vendor-advisory
https://github.com/openclaw/openclaw/security/advisories/GHSA-fphf-69cp-h5xw
third-party-advisory
https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-path-traversal-via-structured-attachments
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