What’s Vulnerable › Vulnerabilities

CVE-2026-40037: OpenClaw < 2026.4.8 - Unsafe Request Body Replay via fetchWithSsrFGuard Cross-Origin Redirects

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-08 · updated 2026-10-29
• Weakness: CWE-601

Description

OpenClaw before 2026.4.8 contains a request body replay vulnerability in fetchWithSsrFGuard that allows unsafe request bodies to be resent across cross-origin redirects. Attackers can exploit this by triggering redirects to exfiltrate sensitive request data or headers to unintended origins.

Affected products

• OpenClaw: before 2026.4.8 — fixed in 2026.4.8
• OpenClaw: before 2026.4.8 — fixed in 2026.4.8

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.8; OpenClaw 2026.4.8. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5
• https://github.com/openclaw/openclaw/security/advisories/GHSA-qx8j-g322-qj6m
• https://www.vulncheck.com/advisories/openclaw-unsafe-request-body-replay-via-fetchwithssrfguard-cross-origin-redirects

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