CVE-2026-53861 | THREATINT

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.

PUBLISHED Reserved 2026-06-10 | Published 2026-06-16 | Updated 2026-06-17 | Assigner VulnCheck

MEDIUM: 5.3CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.6CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Problem types

Incomplete List of Disallowed Inputs

Product status

Default status

unaffected

Any version before 2026.5.6

affected

2026.5.6 (semver)

unaffected

Credits

zsx (@zsxsoft) reporter

KeenSecurityLab coordinator

qclawer tool

References

github.com/...enclaw/security/advisories/GHSA-c226-q6fx-6j6c (GitHub Security Advisory (GHSA-c226-q6fx-6j6c)) vendor-advisory

www.vulncheck.com/...ia-combined-posix-inline-flags-on-macos (VulnCheck Advisory: OpenClaw < 2026.5.6 - Allowlist Bypass via Combined POSIX Inline Flags on macOS) third-party-advisory

cve.org (CVE-2026-53861)

nvd.nist.gov (CVE-2026-53861)

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