Medium severity5.4NVD Advisory· Published Nov 8, 2026· Updated Nov 8, 2026

CVE-2026-123527

Description

Vikunja from 2.4.0 before 2.7.1 contains an authorization bypass vulnerability that allows token holders to perform unintended operations due to colliding v1 and v2 API token permission keys. Attackers with a token scoped to read project backgrounds can delete them via the v2 DELETE background route, and bucket create-only tokens can update existing buckets.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Go Vikunja/Vikunjallm-fuzzy
Range: 2.4.0 <= v < 2.7.1

Patches

Vulnerability mechanics

References

github.com/go-vikunja/vikunja/security/advisories/GHSA-j5v7-qcwp-5g32nvd
www.vulncheck.com/advisories/vikunja-2.4.0-before-2.7.1-api-token-scope-collision-authorization-bypassnvd

News mentions

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000