Vulnerability details
CVE-2026-91968
go-vikunja vikunja
vikunja before 2.6.0 Denial of Service via unbounded filter recursion
CVSS 4.0
7.1High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| 6.5Medium | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| go-vikunja | vikunja | 2.5.0 ≤ v < 2.6.0 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-09-15
- Last updated
- 2026-09-15
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.43%
Probability of exploitation in 30 days
38%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-674Uncontrolled Recursion