Summary
Update bitlyshortener to >=0.5.0 to prevent generating some invalid short URLs
References
Impact
Due to a sudden upstream breaking change by Bitly, versions of bitlyshortener <0.5.0 can generate an invalid short URL when a vanity domain exists.
Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites. Typical impact: phishing and credential harvesting via a trusted domain.
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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Upgrading bitlyshortener to 0.5.0 or newer will prevent the generation of any such invalid short URLs.
Frequently Asked Questions
- What is GHSA-R82C-J4MQ-5XFW? GHSA-R82C-J4MQ-5XFW is a high-severity open redirect vulnerability in bitlyshortener (pip), affecting versions < 0.5.0. It is fixed in 0.5.0. Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites.
- Which versions of bitlyshortener are affected by GHSA-R82C-J4MQ-5XFW? bitlyshortener (pip) versions < 0.5.0 is affected.
- Is there a fix for GHSA-R82C-J4MQ-5XFW? Yes. GHSA-R82C-J4MQ-5XFW is fixed in 0.5.0. Upgrade to this version or later.
- Is GHSA-R82C-J4MQ-5XFW exploitable, and should I be worried? Whether GHSA-R82C-J4MQ-5XFW 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-R82C-J4MQ-5XFW 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-R82C-J4MQ-5XFW? Upgrade
bitlyshortenerto 0.5.0 or later.