Duplicate Advisory: Vikunja: API token scopes bypassed via task expand parameter (comments, reactions, time entry counts)

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-9rg3-v78m-26q8. This link is maintained to preserve external references. Original Description Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fail...

CVE-2026-91983

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...

CVE-2026-91983 Vikunja before 2.6.0 API Token Scope Bypass via expand Parameter

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...

CVE-2026-91983 Vikunja before 2.6.0 API Token Scope Bypass via expand Parameter

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...

CVE-2026-91983

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...

CVE-2026-91983

Vikunja before 2.6.0 contains an API token scope bypass in its task read endpoints. The root cause is that authorization logic fails to inspect query string parameters , allowing attackers holding limited-scope tokens to leverage the expand parameter to access restricted data such as comments, re...

CVE-2026-91983: Incorrect Authorization

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...