CVE-2026-53855
highpriority · track · 0OT risk · elevatedEPSS 0.003 · 18 %ileDEEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–8.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1738OpenClaw: Mehrere SchwachstellenDeutsch2026-05-28csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um Sicherheitsmechanismen zu umgehen, erhöhte Berechtigungen zu erlangen, Informationen offenzulegen, Konfigurationen zu manipulieren, beliebige Befehle oder Code auszuführen sowie interne Systeme über SSRF anzugreifen.
- GHSA-5cj2-3jr2-5h77OpenClaw: Shell positional parameters could weaken strict inline-eval checks2026-06-18ghsa · osvUS
### Summary Shell positional parameters could weaken strict inline-eval checks. In affected versions, a command request that combines allowlisted tools with shell positional arguments could place inline-eval content in a shell carrier not covered by the strict check. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could run shell-provided content outside the intended allowlist rule. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.4.2`. ### Mitigations avoid allowlisting shell carrier patterns and require approval for shell wrappers until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclaw/releasesPatchcnnvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-5cj2-3jr2-5h77cnnvd
- https://www.vulncheck.com/advisories/openclaw-shell-positional-parameters-bypass-in-inline-eval-checkscnnvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-5cj2-3jr2-5h77enisa_euvd
- https://www.vulncheck.com/advisories/openclaw-shell-positional-parameters-bypass-in-inline-eval-checksenisa_euvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-5cj2-3jr2-5h77Vendor Advisorynvd
- https://www.vulncheck.com/advisories/openclaw-shell-positional-parameters-bypass-in-inline-eval-checksThird Party Advisorynvd
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