CVE-2026-40037

MEDIUM

OpenClaw < 2026.3.31 - Unsafe Request Body Replay via fetchWithSsrFGuard Cross-Origin Redirects

Title source: cna
STIX 2.1

Description

OpenClaw before 2026.3.31 (patched in 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.

References (3)

Core 3
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-qx8j-g322-qj6m)
https://github.com/openclaw/openclaw/security/advisories/GHSA-qx8j-g322-qj6m
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.31 - Unsafe Request Body Replay via fetchWithSsrFGuard Cross-Origin Redirects
https://www.vulncheck.com/advisories/openclaw-unsafe-request-body-replay-via-fetchwithssrfguard-cross-origin-redirects

Scores

CVSS v3 6.5
EPSS 0.0024
EPSS Percentile 14.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-601
Status published
Products (5)
npm/openclaw 0 - 2026.4.8npm
OpenClaw/OpenClaw < 2026.3.31
openclaw/openclaw < 2026.4.8
OpenClaw/OpenClaw < 2026.4.8
OpenClaw/OpenClaw 2026.4.8
Published Apr 08, 2026
Tracked Since Apr 09, 2026