CVE-2026-35598: vikunja · Missing Authorization
Affects vikunjaSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 2.3.0 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.3.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade vikunja and github.com/go-vikunja/vikunja to 2.3.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| go-vikunjavikunja | Affected
| Fixed in
|
Gogithub.com/go-vikunja/vikunjapkg:golang/github.com/go-vikunja/vikunjaOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Vikunja to version 2.3.0 or later, where this authorization issue is fixed. No other mitigations are indicated.
Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV GetResource and GetResourcesByList methods fetch tasks by UID from the database without verifying that the authenticated user has access to the task's project. Any authenticated CalDAV user who knows (or guesses) a task UID can read the full task data from any project on the instance. This vulnerability is fixed in 2.3.0.
References
- github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x (opens in a new tab)
- github.com/go-vikunja/vikunja/pull/2579 (opens in a new tab)
- github.com/go-vikunja/vikunja/commit/879462d717351fe5d276ddec5246bdec31b41661 (opens in a new tab)
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0 (opens in a new tab)