Summary
On macOS, the Claude CLI keychain credential refresh path constructed a shell command to write the updated JSON blob into Keychain via security add-generic-password -w .... Because OAuth tokens are user-controlled data, this created an OS command injection risk.
The fix avoids invoking a shell by using execFileSync("security", argv) and passing the updated keychain payload as a literal argument.
Affected Packages / Versions
- Package:
openclaw(npm) - Platform: macOS only
- Affected versions:
<= 2026.2.13
Impact
Untrusted input reaches a shell command, allowing arbitrary commands to run on the host. Typical impact: code execution in the application's environment.
CVE-2026-27487 has a CVSS score of 7.6 (High). The vector is network-reachable, low privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (2026.2.14); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
- Patched version:
>= 2026.2.14(next release) - Fix PR: #15924
- Fix commits (merged to
main):9dce3d8bf83f13c067bc3c32291643d2f1f10a0666d7178f2d6f9d60abad35797f97f3e61389b70cb908388245764fb3586859f44d1dff5372b19caf
Thanks @aether-ai-agent for reporting.
Frequently Asked Questions
- What is CVE-2026-27487? CVE-2026-27487 is a high-severity OS command injection vulnerability in openclaw (npm), affecting versions < 2026.2.14. It is fixed in 2026.2.14. Untrusted input reaches a shell command, allowing arbitrary commands to run on the host.
- How severe is CVE-2026-27487? CVE-2026-27487 has a CVSS score of 7.6 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of openclaw are affected by CVE-2026-27487? openclaw (npm) versions < 2026.2.14 is affected.
- Is there a fix for CVE-2026-27487? Yes. CVE-2026-27487 is fixed in 2026.2.14. Upgrade to this version or later.
- Is CVE-2026-27487 exploitable, and should I be worried? Whether CVE-2026-27487 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-27487 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-27487? Upgrade
openclawto 2026.2.14 or later.