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GHSA-392f-ggf5-fp3c

OpenClaw: Unicode canonicalization drift in node metadata policy classification could broaden node allowlists

Medium npm
Severity
0.0 / 10
Medium · CVSS 4.0
Exploit chance (EPSS)
—
No score published
Known exploited
No
Not in CISA's catalog
Weakness
CWE-176 Improper Handling of Unicode Encoding
CWE-436 Interpretation Conflict
Fix
2026.3.1
Upgrade openclaw to this version or later

Description

Summary

A paired node could supply Unicode-confusable platform or deviceFamily metadata that passed metadata pinning but classified differently for command policy resolution, broadening default node command allowlists.

Impact

This is a policy-bypass issue within the paired-node trust boundary and can expand node command availability beyond intended defaults.

Fix

Node metadata canonicalization was hardened against confusables, and unknown platform defaults were made conservative (excluding system.run and system.which unless explicitly allowlisted).

Affected and Patched Versions

  • Affected: <= 2026.2.26
  • Patched: 2026.3.1

Affected versions

npm

PackageVulnerableFixed in
openclaw
< 2026.3.1
2026.3.1

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

openclaw npm → 2026.3.1

npm
npm install openclaw@2026.3.1
yarn
yarn add openclaw@2026.3.1
pnpm
pnpm add openclaw@2026.3.1

Severity breakdown

CVSS 4.0 0.0

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

Attack vector
Network
Attack complexity
Low
Attack requirements
None
Privileges required
None
User interaction
None
Confidentiality (vulnerable system)
None
Integrity (vulnerable system)
Low
Availability (vulnerable system)
None
Confidentiality (subsequent systems)
None
Integrity (subsequent systems)
None
Availability (subsequent systems)
None

Weakness

CWE-176: Improper Handling of Unicode Encoding

The product does not properly handle when an input contains Unicode encoding.

How to prevent it
  • Architecture and Design: Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.
  • Implementation: Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue." Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • Implementation: Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

CWE-436: Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

References

Timeline

  1. Published
  2. Last updated by the source
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