Vulnerability · Published Jun 16, 2026 · Assigned by VulnCheck

CVE-2026-53861OpenClaw < 2026.5.6 - Allowlist Bypass via Combined POSIX Inline Flags on macOS

Medium 6.6

In plain English

A medium-severity security flaw 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 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.6Medium

Exploit odds (30 days)0.2%top 83.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw before 2026.5.6 contains an allowlist bypass vulnerability in the macOS Swift exec feature that misses combined POSIX inline-command flags. Attackers can execute shell content outside the intended allowlist check by using combined flag forms, potentially allowing unauthorized command execution depending on operator configuration.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.5.6	GHSA-c226-q6fx-6j6c

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.5.6

Weakness: CWE-184 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-c226-q6fx-6j6c) vendor-advisory
VulnCheck Advisory: OpenClaw < 2026.5.6 - Allowlist Bypass via Combined POSIX Inline Flags on macOS third-party-advisory