CVE-2026-33676 (GCVE-0-2026-33676)
Vulnerability from cvelistv5 – Published: 2026-03-24 15:35 – Updated: 2026-03-24 18:55
VLAI
EPSS
VEX
Title
Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read
Summary
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, when the Vikunja API returns tasks, it populates the `related_tasks` field with full task objects for all related tasks without checking whether the requesting user has read permission on those tasks' projects. An authenticated user who can read a task that has cross-project relations will receive full details (title, description, due dates, priority, percent completion, project ID, etc.) of tasks in projects they have no access to. Version 2.2.1 patches the issue.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-24 18:55 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | x_refsource_CONFIRM |
| https://github.com/go-vikunja/vikunja/pull/2449 | x_refsource_MISC |
| https://github.com/go-vikunja/vikunja/commit/833f… | x_refsource_MISC |
| https://vikunja.io/changelog/vikunja-v2.2.2-was-r… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| go-vikunja | vikunja |
Affected:
< 2.2.1
|
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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