CVE-2026-40037

HIGH
MEDIUM Priority: 0.02 BB Relevance: 64/100
Published: 2026-04-08 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: None
VC: High
VI: None
VA: None

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 Software (3)

VendorProductVersion
OpenClaw OpenClaw 0 < 2026.4.8
OpenClaw OpenClaw 0 < 2026.4.8
openclaw openclaw < 2026.4.8

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.30%
Raw Score 0.003050
Percentile 23.2%
Date 2026-10-29

Intelligence Sources

mitre ref →
nvd ref →