CVE-2026-35635: OpenClaw before 2026.3.22 contains a webhook path route replacement vulnerability in the Synology Chat extensi

Routine

MEDIUM 4.8REMOTEUPGRADE

CVE-2026-35635 is a medium-severity flaw (CVSS 4.8) affecting openclaw. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenClaw before 2026.3.22 contains a webhook path route replacement vulnerability in the Synology Chat extension that allows attackers to collapse multi-account configurations onto shared webhook paths. Attackers can exploit inherited or duplicate webhook paths to bypass per-account DM access control policies and replace route ownership across accounts.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-706, CWE-863
Published	2026-04-09
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: openclaw

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-09 22:16 UTCPublished CVE record published
2026-06-17 10:40 UTCUpdated Record last modified

openclaw openclaw UPGRADE

Affected: < 2026.3.22

Fixed in: 2026.3.22

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls openclaw

2. UPGRADE to 2026.3.22

npm install openclaw@">=2026.3.22"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35635?

openclaw: upgrade to 2026.3.22. Exact commands for each OS are on this page.

Is CVE-2026-35635 being exploited?

CVE-2026-35635 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35635 affect?

CVE-2026-35635 affects openclaw. Severity is medium (CVSS 4.8). OpenClaw before 2026.3.22 contains a webhook path route replacement vulnerability in the Synology Chat extension that allows attackers to collapse multi-account configurations onto shared webhook paths. Attackers can exploit inherited or du

How urgent is CVE-2026-35635?

Priority 26/100. Remotely exploitable, no login, no user action

Software pages

Synology vulnerabilities

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References

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