CVE-2026-35640: OpenClaw < 2026.3.25 - Denial of Service via Unauthenticated Webhook Request Parsing
Fixed in 2026.3.25 · Affected: OpenClaw before 2026.3.25 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 39% of scored CVEs
DescriptionCVE.org
OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- OpenClaw · OpenClawbefore 2026.3.25
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- OpenClaw
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-35640 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.