Summary
thelounge may publicly disclose of all usernames/idents via port 113
Per RFC 1413, The unique identifying tuple includes not only the ports, but also the both addresses. Without the addresses, the information becomes both non-unique and public:
- If multiple connections happen to use the same local port number (which is possible if the addresses differ), the username of the first is returned for all, resulting in the wrong ident for all but the first.
- By not checking the connection address, the information becomes public. Because there is only a relatively small number of local ports, and the remote ports are likely to be either 6667 or 6697, it becomes trivial to scan the entire range to get a list of idents.
To prevent this from happening, disable identd or upgrade to a non vulnerable version.
Impact
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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Frequently Asked Questions
- What is GHSA-G49Q-JW42-6X85? GHSA-G49Q-JW42-6X85 is a low-severity security vulnerability in thelounge (npm), affecting versions <= 4.4.3. No fixed version is listed yet.
- Which versions of thelounge are affected by GHSA-G49Q-JW42-6X85? thelounge (npm) versions <= 4.4.3 is affected.
- Is there a fix for GHSA-G49Q-JW42-6X85? No fixed version is listed for GHSA-G49Q-JW42-6X85 yet. Monitor the advisory for updates and apply mitigations in the interim.
- Is GHSA-G49Q-JW42-6X85 exploitable, and should I be worried? Whether GHSA-G49Q-JW42-6X85 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-G49Q-JW42-6X85 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.