CVE-2026-123523
Vikunja before 2.7.1 Memory Exhaustion via Unbounded Avatar Size Cache
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.
| CWE | CWE-770 |
| Vendor | go-vikunja |
| Product | vikunja |
| Published | Nov 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
go-vikunja / vikunja
0 < 2.7.1
References
Credits
🔍 NotAFlightRisk