Summary
Vikunja: Any user can enumerate every team and its members by attaching arbitrary teams to a throwaway project
Impact
Information disclosure of the instance-wide team directory: team names, descriptions, and full membership, for teams the attacker has no relationship with. This maps out the organisation's group structure and who belongs where, useful for targeting and social engineering. Any authenticated account is enough; no share link, no admin rights, no victim interaction.
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 CVE-2026-91980? CVE-2026-91980 is a medium-severity security vulnerability in code.vikunja.io/api (go), affecting versions <= 2.5.0. It is fixed in 2.6.0.
- Which versions of code.vikunja.io/api are affected by CVE-2026-91980? code.vikunja.io/api (go) versions <= 2.5.0 is affected.
- Is there a fix for CVE-2026-91980? Yes. CVE-2026-91980 is fixed in 2.6.0. Upgrade to this version or later.
- Is CVE-2026-91980 exploitable, and should I be worried? Whether CVE-2026-91980 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-2026-91980 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-2026-91980? Upgrade
code.vikunja.io/apito 2.6.0 or later.