CVE-2026-35596 json
Vikunja has Broken Access Control on Label Read via SQL Operator Precedence Bug
published 6mo ago modified 14d ago also EUVD-2026-21420 , GHSA-hj5c-mhh2-g7jq , GO-2026-5428
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the hasAccessToLabel function contains a SQL operator precedence bug that allows any authenticated user to read any label that has at least one task association, regardless of project access. Label titles, descriptions, colors, and creator information are exposed. This vulnerability is fixed in 2.3.0.
Patch / fix
- go code.vikunja.io/api 2.3.0
- vikunja vikunja 2.3.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/go-vikunja/vikunja@fc216c3 commit
- github.com/go-vikunja/vikunja#2578 pull request
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0 release
Is CVE-2026-35596 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hj5c-mhh2-g7jq referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | <2.3.0 all versions |
2.3.0 |
Affected products
- go-vikunja vikunja
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/go-vikunja/vikunja/pull/2578
web, issue-tracking
-
github.com
/go-vikunja/vikunja/commit/fc216c38afaa51dd56dde7a97343d2148ecf24c1
web, patch
-
github.com
/go-vikunja/vikunja/security/advisories/GHSA-hj5c-mhh2-g7jq
web, exploit, vendor-advisory, advisory
-
github.com
/go-vikunja/vikunja/releases/tag/v2.3.0
web, release-notes
-
github.com
/go-vikunja/vikunja
package
Sources
- CVE List CVE-2026-35596
- GitHub Advisory GHSA-hj5c-mhh2-g7jq
- NVD CVE-2026-35596
- OSV GO-2026-5428
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.