high7.1
CVE-2026-91968
vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the task-filter endpoint that accepts deeply nested filter expressions without rec…
Impact
vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the task-filter endpoint that accepts deeply nested filter expressions without recursion depth limits. Authenticated attackers can supply thousands of nested parentheses in the filter query parameter to exhaust memory and terminate the API process.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | = 2.5.0 | 2.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-xxc3-xpmc-vmvr
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xxc3-xpmc-vmvr
- https://nvd.nist.gov/vuln/detail/CVE-2026-91968
- https://github.com/go-vikunja/vikunja/pull/3688
- https://github.com/go-vikunja/vikunja/releases/tag/v2.6.0
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-denial-of-service-via-unbounded-filter-recursion