CVE-2026-100545
Received Received - Intake

OpenClaw Session Memory Filename Policy Bypass

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
OpenClaw (npm package `openclaw`) before 2026.8.1 incorrectly enforces sender tool policies during session-memory filename generation. In affected versions, filename generation created an embedded helper that retained tools which the originating sender's policy had removed. When session-memory filename generation was enabled for an agent reachable by lower-trust senders, model-mediated instructions could cause the helper to invoke tools outside that sender's effective policy; the demonstrated impact was the creation of persistent scheduled work. Exploitability depends on the model acting on the injected instruction and on which tools the helper exposes. The issue is fixed in 2026.8.1; as a workaround, disable session-memory filename generation for agents reachable by lower-trust senders.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100545
EUVD
EUVD-2026-87505

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.8.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

This vulnerability in OpenClaw (npm package openclaw) before version 2026.8.1 allows session-memory filename generation to create an embedded helper retaining tools that a sender's policy had removed. This enables model-mediated instructions to invoke tools outside the sender's effective policy, potentially leading to unauthorized actions like creating persistent scheduled work.

Detection Guidance

Check the installed version of the openclaw package using 'npm list openclaw'. If the version is below 2026.8.1, the system is vulnerable. Review agent configurations for session-memory filename generation settings and verify if it is enabled for agents reachable by lower-trust senders.

Impact Analysis

If you use OpenClaw versions before 2026.8.1, an attacker with access to lower-trust senders could exploit this to bypass policy restrictions. This may allow unauthorized tool execution, leading to persistent scheduled tasks or other unintended actions depending on exposed helper tools.

Compliance Impact

This vulnerability could potentially violate compliance with standards like GDPR and HIPAA by allowing unauthorized tool execution and persistent scheduled work outside sender policies. Incorrect authorization may lead to unauthorized data access or processing, which could breach confidentiality and integrity requirements.

Mitigation Strategies

Upgrade the openclaw package to version 2026.8.1 or later using 'npm install openclaw@2026.8.1'. As a temporary workaround, disable session-memory filename generation for agents accessible by lower-trust senders by modifying the relevant configuration files.

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