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CVE-2026-123493 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Vikunja from 2.4.0 before 2.7.1 contains an authentication bypass vulnerability that allows disabled or locked users to retain access through API tokens owned by their bot users. Because token validation only checks the bot's own status, attackers holding pre-minted bot tokens can keep reading and modifying shared projects via the HTTP API, CalDAV, MCP and feeds.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.2 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5fc2-w2j4-6r8w	[email protected]	AdvisoryExploitTechnical AnalysisVendor
https://www.vulncheck.com/advisories/vikunja-from-2.4.0-before-2.7.1-authentication-bypass-via-bot-api-tokens	[email protected]	AdvisoryVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-613	Insufficient Session Expiration	[email protected]

Affected Products

Product	Versions
Vikunja	>= 2.4.0, <= 2.7.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 2.7.1moderate effort

Change History

1 change record found show changes