CVE-2026-123519

Vikunja before 2.7.1 Memory Exhaustion DoS via WeKan and Vikunja-File Imports

Published Nov 8, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
Vikunja before 2.7.1 contains a denial of service vulnerability that allows authenticated users to exhaust API process memory by uploading WeKan or vikunja-file imports with no item-count cap. Attackers can submit a ~22 MB WeKan JSON with hundreds of thousands of cards or duplicate IDs to the wekan migrate endpoint, triggering OOM and crashing the instance.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Vikunja before 2.7.1 contains a denial of service vulnerability that allows authenticated users to exhaust API process memory by uploading WeKan or vikunja-file imports with no item-count cap. Attackers can submit a ~22 MB WeKan JSON with hundreds of thousands of cards or duplicate IDs to the wekan migrate endpoint, triggering OOM and crashing the instance.
Title Vikunja before 2.7.1 Memory Exhaustion DoS via WeKan and Vikunja-File Imports
First Time appeared Vikunja
Vikunja vikunja
Weaknesses CWE-770
CPEs cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
Vendors & Products Vikunja
Vikunja vikunja
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 12, 2026, 2:00 PM
Reserved
Nov 6, 2026, 12:47 AM
Status
Deferred
Published
Nov 8, 2026, 2:16 AM
Modified
Nov 12, 2026, 2:17 PM