CVE-2026-123502 json
Vikunja before 2.7.1 Link-Share Hash Exposure via Request Path Logging
published 21d ago modified 2d ago also EUVD-2026-119387 , GHSA-ff52-3296-2fvr
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository go-vikunja/vikunja. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.2
- 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 13%
- public exploits
- 0
- none known
Summary
Vikunja before 2.7.1 contains an information exposure vulnerability that allows log readers to obtain link-share hashes because the request logger records the raw URI of the /shares/:share/auth route. Attackers with access to Vikunja or reverse proxy access logs can reuse non-expiring, non-password-protected share hashes to obtain a project JWT with read, write or admin permission.
Patch / fix
- go-vikunja vikunja 2.7.1
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2d ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:N/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 products
- go-vikunja vikunja
Classification
- Weakness
-
- CWE-532 Insertion of Sensitive Information into Log File
References
-
github.com
/go-vikunja/vikunja/security/advisories/GHSA-ff52-3296-2fvr
vendor-advisory, advisory
-
vulncheck.com
/advisories/vikunja-before-2.7.1-link-share-hash-exposure-via-request-path-logging
third-party-advisory
Sources
- CVE List CVE-2026-123502
- NVD CVE-2026-123502
- Maintainer advisory GHSA-ff52-3296-2fvr
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.
The maintainers of go-vikunja/vikunja published their own advisory on GitHub. Reviewed sources take precedence over it.