CVE-2026-91979
Last modified
CVE-2026-91979 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Vikunja before 2.6.0 fails to limit archive expansion during data import, allowing authenticated users to cause denial of service. Attackers can upload highly compressed files that expand to tens of gigabytes in memory and disk, exhausting server resources and crashing the instance.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
Vikunja before 2.6.0 fails to limit archive expansion during data import, allowing authenticated users to cause denial of service. Attackers can upload highly compressed files that expand to tens of gigabytes in memory and disk, exhausting server resources and crashing the instance.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| go-vikunja | vikunja | < 2.6.0 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-91979?
How severe is CVE-2026-91979?
How do I fix CVE-2026-91979?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-91969vikunja versions before 2.6.0 contain a resource exhaustion …6.5
- CVE-2026-9197The Smart Slider 3 plugin for WordPress is vulnerable to Dir…4.9
- CVE-2026-91970Vikunja versions before 2.6.0 contain a resource exhaustion …6.5
- CVE-2026-91971Vikunja before 2.6.0 fails to apply pixel decode limits to a…6.5
- CVE-2026-91972Vikunja versions before 2.6.0 fail to apply rate limiting to…7.5
- CVE-2026-91973Vikunja before 2.6.0 contains an authentication bypass vulne…7.5
- CVE-2026-9198IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated…9.8
- CVE-2026-91980vikunja before 2.6.0 fails to validate team access when atta…4.3
- CVE-2026-91981Vikunja versions before 2.6.0 fail to properly validate link…4.3
- CVE-2026-91982Vikunja before 2.6.0 continues to expose the raw TOTP shared…4.3
- CVE-2026-91983Vikunja before 2.6.0 contains an API token scope bypass vuln…4.3
- CVE-2026-91984Vikunja before 2.6.0 fails to validate that user-supplied pr…4.3
Are you affected by CVE-2026-91979?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST