Vulnerability in Openclaw
CVE-2026-43582
OpenClaw before 2026.4.10 contains a server-side request forgery vulnerability in browser navigation policy that allows attackers to bypass hostname validation through DNS rebinding attacks. Attackers can exploit inconsistent hostname resolution between validation and actual network requests to pivot to internal resources via unallowlisted hostname URLs.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.2% 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: 0.003 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.4.10
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/commit/121c452d666d4749744dc2089287d0227aae2ed3 (Patch, patch)
- github.com/openclaw/openclaw/security/advisories/GHSA-xq94-r468-qwgj (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/openclaw-dns-rebinding-ssrf-via-hostname-validatio… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-43582?
- CVE-2026-43582 is a medium-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-05-06.
- How severe is CVE-2026-43582?
- Medium severity. CVSS v3 base score is 6.3 out of 10.