Information disclosure in Openclaw
CVE-2026-100528
OpenClaw (npm package 'openclaw') before 2026.8.1 could send third-party provider credentials to the wrong endpoint. In affected versions, when a third-party provider uses an OpenAI-compatible API and the resolved model metadata lacks a concrete base URL, a pinned session that continues after a model configuration hot reload retains that provider's credential while the OpenAI SDK selects its own default endpoint. A resulting request could disclose the configured third-party provider credential to an unrelated provider endpoint and fail with a misleading authentication error. Operators who observed this condition should rotate the affected credential. The issue is fixed in 2026.8.1.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (15.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-vhpg-cq3w-v8p9) (vendor-advisory)
- VulnCheck Advisory: OpenClaw before 2026.8.1 Credential Disclosure via Provider Endpoint (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100528?
- CVE-2026-100528 is a medium-severity vulnerability in Openclaw, classified under Information Disclosure. CVSS score: 5.4/10. Published 2026-09-26.
- How severe is CVE-2026-100528?
- Medium severity. CVSS v3 base score is 5.4 out of 10.