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.
Metrics
Affected Vendors & Products
References
History
Tue, 15 Sep 2026 16:30:00 +0000
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ssvc
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Tue, 15 Sep 2026 15:30:00 +0000
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| Description | 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. | |
| Title | Vikunja before 2.6.0 API Token Scope Bypass via expand Parameter | |
| First Time appeared |
Vikunja
Vikunja vikunja |
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| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vikunja
Vikunja vikunja |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-15T15:18:26.899Z
Updated: 2026-09-15T15:52:07.941Z
Reserved: 2026-09-15T11:10:41.353Z
Link: CVE-2026-91983
Updated: 2026-09-15T15:52:03.479Z
Status : Deferred
Published: 2026-09-15T16:17:55.373
Modified: 2026-09-16T20:16:09.343
Link: CVE-2026-91983
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