CVE-2026-100543 OpenClaw before 2026.8.1 Information Disclosure via Configuration Hash
Attackers can recover low-entropy Gateway passwords by analyzing deterministic hashes in redacted configuration responses, potentially gaining operator authority.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-100543?
CVE-2026-100543 is a high-severity vulnerability in OpenClaw, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OpenClaw (npm package openclaw) before 2026.8.1 could include deterministic hashes computed over the original, unredacted configuration in redacted configuration responses. When the Gateway password had low entropy and the remaining configuration values were reconstructable, these hashes acted as offline password verifiers: a caller able to obtain the redacted configuration (for example via config.get) could test password candidates offline without going through the rate-limited Gateway authentication path. Recovering the password could grant the documented shared-secret operator authority. Secret references were not affected in the same way. The issue is fixed in 2026.8.1.
Weakness: CWE-200
Which versions are affected by CVE-2026-100543?
How do I fix CVE-2026-100543?
Upgrade to a fixed version.
Is CVE-2026-100543 being exploited?
There is no known exploitation of CVE-2026-100543 in the wild and no public exploit code.
Sources
Also known as GHSA-5r8x-www3-x8m9, GHSA-qgj5-6x35-9g6f, MINI-82gr-6pqp-c2j8.