CVE-2026-111921 json
Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion
published last mo. modified 13d ago also EUVD-2026-103289 , GHSA-fmmf-xq98-g327 , GO-2026-6730
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
Vikunja 0.13.0 before 2.7.0 contains an incorrect authorization vulnerability that allows project members with Write permission to delete admin-tier link shares because the delete permission check reads an unloaded share object. Attackers can send DELETE requests to the v1 or v2 projects shares endpoints with sequential share IDs to revoke admin links and invalidate existing share sessions.
Patch / fix
- go code.vikunja.io/api 2.7.0
- go-vikunja vikunja 2.7.0
Is CVE-2026-111921 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
- 19d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | >=0.13.0, <2.7.0 all versions |
2.7.0 |
Affected products
- go-vikunja vikunja
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/go-vikunja/vikunja/commit/60e543777b4d3ec8376f5485911cdec697e8c8ee
web
-
github.com
/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327
vendor-advisory, exploit, web, advisory
-
vulncheck.com
/advisories/vikunja-0.13.0-before-2.7.0-incorrect-authorization-in-link-share-deletion
third-party-advisory
-
github.com
/go-vikunja/vikunja
package
-
github.com
/go-vikunja/vikunja/releases/tag/v2.7.0
web
Sources
- CVE List CVE-2026-111921
- GitHub Advisory GHSA-fmmf-xq98-g327
- NVD CVE-2026-111921
- OSV GO-2026-6730
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.