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Description

OpenClaw before 2026.4.2 contains an inline-eval bypass vulnerability allowing authenticated operators to weaken strict allowlist checks via shell positional parameters. Attackers can combine allowlisted tools with shell positional arguments to place inline-eval content in shell carriers outside intended allowlist rules, enabling execution of unapproved shell-provided content.

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




HIGH: 7.6CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Problem types

Incomplete List of Disallowed Inputs

Incorrect Authorization

Product status

Default status
unaffected

Any version before 2026.4.2
affected

2026.4.2 (semver)
unaffected

Credits

cantinagen reporter

Ellahi (@Ellahinator) finder

References

github.com/...enclaw/security/advisories/GHSA-5cj2-3jr2-5h77 (GitHub Security Advisory (GHSA-5cj2-3jr2-5h77)) vendor-advisory

www.vulncheck.com/...parameters-bypass-in-inline-eval-checks (VulnCheck Advisory: OpenClaw < 2026.4.2 - Shell Positional Parameters Bypass in Inline-Eval Checks) third-party-advisory

cve.org (CVE-2026-53855)

nvd.nist.gov (CVE-2026-53855)

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