CVE-2026-91983 (GCVE-0-2026-91983)
Vulnerability from cvelistv5
Published
2026-09-15 15:18
Modified
2026-09-15 15:52
Severity ?
5.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fails to inspect query string parameters. Attackers with limited token scopes can use the expand parameter to access restricted data like comments, reactions, and time entries without proper permission verification.
References
Impacted products
Vendor Product Version
go-vikunja vikunja Version: 1.0.0   ≤
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