CVE-2026-33680

HIGH

7.5

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, including their secret hashes. While `LinkSharing.CanRead()` correctly blocks link share users from reading individual shares via `ReadOne`, the `ReadAllWeb` handler bypasses this check by never calling `CanRead()`. An attacker with a read-only link share can retrieve hashes for write or admin link shares on the same project and authenticate with them, escalating to full admin access. Version 2.2.2 patches the issue.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/24/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

vikunja:vikunja

Weaknesses (CWE)

CWE-285

References

https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9(security-advisories@github.com)

https://vikunja.io/changelog/vikunja-v2.2.2-was-released(security-advisories@github.com)

IOC Correlations

No correlations recorded

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