Vulnerability details

CVE-2026-91969

go-vikunja vikunja

vikunja before 2.6.0 Resource Exhaustion via CSV Migration

CVSS 4.0

7.1High

Official description

vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the POST /api/v2/migration/csv/migrate endpoint that fails to limit parsed row cardinality. Authenticated attackers can upload multipart CSV files with millions of tiny records to exhaust process memory and terminate the API service.

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

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pqf9-h8g4-8gmh vendor-advisory
https://www.vulncheck.com/advisories/vikunja-before-2.6.0-resource-exhaustion-via-csv-migration third-party-advisory

Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published: 2026-09-15
Last updated: 2026-09-17
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.37%

Probability of exploitation in 30 days

31.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-400
Uncontrolled Resource Consumption