Summary
Reverse Tabnabbing in quill
Versions of quill prior to 1.3.7 are vulnerable to Reverse Tabnabbing. The package uses target='_blank' in anchor tags, allowing attackers to access window.opener for the original page when opening links. This is commonly used for phishing attacks.
Impact
GHSA-588M-9QG5-35PQ has a CVSS score of 6.5 (Medium). The vector is network-reachable, no 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 (1.3.7); 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.
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No fix is currently available. Consider using an alternative package until a fix is made available.
Frequently Asked Questions
- What is GHSA-588M-9QG5-35PQ? GHSA-588M-9QG5-35PQ is a medium-severity security vulnerability in quill (npm), affecting versions < 1.3.7. It is fixed in 1.3.7.
- How severe is GHSA-588M-9QG5-35PQ? GHSA-588M-9QG5-35PQ has a CVSS score of 6.5 (Medium). 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 quill are affected by GHSA-588M-9QG5-35PQ? quill (npm) versions < 1.3.7 is affected.
- Is there a fix for GHSA-588M-9QG5-35PQ? Yes. GHSA-588M-9QG5-35PQ is fixed in 1.3.7. Upgrade to this version or later.
- Is GHSA-588M-9QG5-35PQ exploitable, and should I be worried? Whether GHSA-588M-9QG5-35PQ 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 GHSA-588M-9QG5-35PQ 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 GHSA-588M-9QG5-35PQ? Upgrade
quillto 1.3.7 or later.