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VulnerabilityPublished Updated

CVE-2026-35626: OpenClaw · Asymmetric Resource Consumption

Affects OpenClawSource GCVE Database

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Not known to be exploited · CVSS 6.9 Medium : upgrade to 2026.3.22 when convenient.

Data as of 12 Nov 2026, 03:03 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.9
CNA (VulnCheck)CVSS 3.15.3
Patch
Available – fixed in 2026.3.22
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade OpenClaw to 2026.3.22.

Affected software

ProductAffectedFixed in
OpenClaw OpenClawAffected
  • <2026.3.22
Fixed in
  • 2026.3.22

AI-suggested

A fix is available in OpenClaw version 2026.3.22 and later. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation or temporary workaround is indicated in the provided data.

Description

OpenClaw before version 2026.3.22 has a vulnerability in its voice call webhook handling that allows unauthenticated attackers to exhaust server resources. This occurs because the system buffers request bodies before verifying provider signatures, enabling attackers to send large or malicious webhook requests that consume excessive resources without authentication.

References

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