Vulnerability · Published Apr 10, 2026 · Assigned by VulnCheck

CVE-2026-35661OpenClaw < 2026.3.25 - Telegram DM-Scoped Inline Button Callback Authorization Bypass

Medium 5.3

In plain English

A medium-severity authentication bypass in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 78.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Telegram callback query handling that allows attackers to mutate session state without satisfying normal DM pairing requirements. Remote attackers can exploit weaker callback-only authorization in direct messages to bypass DM pairing and modify session state.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.3.28	GHSA-j4c9-w69r-cw33

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.3.25

Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

GitHub Security Advisory (GHSA-j4c9-w69r-cw33) vendor-advisory
Patch Commit patch
VulnCheck Advisory: OpenClaw < 2026.3.25 - Telegram DM-Scoped Inline Button Callback Authorization Bypass third-party-advisory