{"cve":"CVE-2026-91970","nvd":{"published":"2026-09-15T16:17:53.803","modified":"2026-09-16T19:49:18.987","status":"Deferred","description":"Vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the Planka migrator that fails to enforce aggregate memory budgets during migration jobs. Authenticated attackers can submit migration requests pointing to attacker-controlled servers advertising numerous size-compliant attachments, exhausting worker memory and causing denial of service for all users.","cvss_v4":{"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","score":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-770"],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-wq92-8x3r-fm38","https://www.vulncheck.com/advisories/vikunja-before-2.6.0-resource-exhaustion-via-planka-migration","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-wq92-8x3r-fm38"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-91970","score":0.00378,"percentile":0.31824,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-wq92-8x3r-fm38","url":"https://osv.dev/vulnerability/GHSA-wq92-8x3r-fm38","summary":"Vikunja: Planka migration retains an unbounded aggregate of attacker-served attachments and can OOM the API","modified":"2026-10-19T21:41:00.503878989Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":[">=2.5.0 <2.6.0"],"fixed":["2.6.0"]}]},{"id":"GO-2026-6757","url":"https://osv.dev/vulnerability/GO-2026-6757","summary":"Vikunja: Planka migration retains an unbounded aggregate of attacker-served attachments and can OOM the API in code.vikunja.io/api","modified":"2026-10-19T21:31:37.818345603Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}