CVE-2026-35670 OpenClaw < 2026.3.22 - Webhook Reply Rebinding via Username Resolution in Synology Chat

What is CVE-2026-35670?

CVE-2026-35670 is a medium-severity vulnerability in Openclaw Openclaw, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OpenClaw before 2026.3.22 contains a webhook reply delivery vulnerability that allows attackers to rebind chat replies to unintended users by exploiting mutable username matching instead of stable numeric user identifiers. Attackers can manipulate username changes to redirect webhook-triggered replies to different users, bypassing the intended recipient binding recorded in webhook events.

Weakness: CWE-807

Which versions are affected by CVE-2026-35670?

2 open source packages ship an affected version, including openclaw. It affects 1 product.

Products include Openclaw Openclaw.

How do I fix CVE-2026-35670?

Upgrade openclaw to 2026.3.22 or later.

Is CVE-2026-35670 being exploited?

There is no known exploitation of CVE-2026-35670 in the wild and no public exploit code.

Other vulnerabilities in Openclaw Openclaw

• CVE-2026-28363 Security feature bypass in OpenClaw Critical 9.9
• CVE-2026-30741 Code injection in n/a Critical 9.8
• CVE-2026-33579 OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval Critical 9.4
• CVE-2026-32922 OpenClaw < 2026.3.11 - Privilege Escalation via Unvalidated Scope in device.token.rotate Critical 9.4
• CVE-2026-32978 OpenClaw < 2026.3.11 - Approval Bypass via Unrecognized Script Runners Critical 9.4

All Openclaw Openclaw vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-wv46-v6xc-2qhf, MINI-x893-rw8r-crrm.