HOMEVULNERABILITIESCVE-2026-40037
MEDIUM

CVE-2026-40037

CWE-601Published: April 8, 2026· Updated: Apr 13, 2026

6.5
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:8.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-40037 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Vendors & Products

openclaw1 product
openclaw
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (3)

→
https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5Patch
→
https://github.com/openclaw/openclaw/security/advisories/GHSA-qx8j-g322-qj6mVendor Advisory
→
https://www.vulncheck.com/advisories/openclaw-unsafe-request-body-replay-via-fetchwithssrfguard-cross-origin-redirectsThird Party Advisory

Quick Facts

CVE IDCVE-2026-40037
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-601
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedApr 8, 2026

Related CVEs (CWE-601)

CVE-2026-6795
9.6
CVE-2026-41106
9.3
CVE-2026-29067
9.3
CVE-2026-33102
9.3
CVE-2026-0573
9.0
CVE-2026-35259
8.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-40037 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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