HOMEVULNERABILITIESCVE-2026-29606
MEDIUM

CVE-2026-29606

CWE-306Published: March 5, 2026· Updated: Mar 11, 2026

6.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:10.2th

Official Description

OpenClaw versions prior to 2026.2.14 contain a webhook signature-verification bypass in the voice-call extension that allows unauthenticated requests when the tunnel.allowNgrokFreeTierLoopbackBypass option is explicitly enabled. An external attacker can send forged requests to the publicly reachable webhook endpoint without a valid X-Twilio-Signature header, resulting in unauthorized webhook event handling and potential request flooding attacks.

NVD Source

Technical Analysis

CVE-2026-29606 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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/ff11d8793b90c52f8d84dae3fbb99307da51b5c9
ADVISORYhttps://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76
ADVISORYhttps://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibility

All References (3)

→
https://github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9Patch
→
https://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76Vendor Advisory
→
https://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibilityThird Party Advisory

Quick Facts

CVE IDCVE-2026-29606
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-306
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 5, 2026

Related CVEs (CWE-306)

CVE-2026-49257
10.0
CVE-2026-46846
10.0
CVE-2026-44329
10.0
CVE-2026-34162
10.0
CVE-2026-54309
10.0
CVE-2026-46803
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-29606 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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