CVE-2026-100539 OpenClaw before 2026.8.1 Memory Access Control Bypass
Attackers can bypass memory access controls to read durable memory after operator disablement if tools remain active during an agent run.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-100539?
CVE-2026-100539 is a low-severity missing authorization vulnerability in OpenClaw, published on 26 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
OpenClaw (npm package 'openclaw') before 2026.8.1 fails to revoke memory tool access when an operator hot-disables memory configuration. Existing memory_search and memory_get tool instances retain the enabled configuration captured at creation time because the execution-time resolver treats explicit disablement like an unavailable configuration snapshot and restores the stale authority. As a result, during an already-running agent turn the model can continue searching and reading durable memory after the operator revoked that access, for the remainder of that run. Exploitation requires memory to be disabled while a previously created memory tool remains active. The issue is fixed in 2026.8.1.
Weakness: CWE-863
Which versions are affected by CVE-2026-100539?
How do I fix CVE-2026-100539?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-100539 being exploited?
There is no known exploitation of CVE-2026-100539 in the wild and no public exploit code.
Sources
Also known as GHSA-9r83-7xq3-vjrp, GHSA-chr6-w4m5-57fv, MINI-rhx4-x2v9-q82r.