CVE-2026-43582: OpenClaw < 2026.4.10 - DNS Rebinding SSRF via Hostname Validation Bypass

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-06 · updated 2026-06-17
Weakness: CWE-367

Description

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.

Affected products

OpenClaw: before 2026.4.10 — fixed in 2026.4.10

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.10. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/121c452d666d4749744dc2089287d0227aae2ed3
https://github.com/openclaw/openclaw/security/advisories/GHSA-xq94-r468-qwgj
https://www.vulncheck.com/advisories/openclaw-dns-rebinding-ssrf-via-hostname-validation-bypass

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