{"cve":"CVE-2026-35600","nvd":{"published":"2026-04-10T17:17:03.680","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday (which allows <a> and <img> tags), injected Markdown constructs produce phishing links and tracking pixels in legitimate notification emails. This vulnerability is fixed in 2.3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/go-vikunja/vikunja/commit/0f3730d045f20e261e3cdfc6d93c325653395b64","https://github.com/go-vikunja/vikunja/pull/2580","https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-45q4-x4r9-8fqj"],"products":["vikunja:vikunja"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-35600","score":0.00195,"percentile":0.09083,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-45q4-x4r9-8fqj","url":"https://osv.dev/vulnerability/GHSA-45q4-x4r9-8fqj","summary":"Vikunja has HTML Injection via Task Titles in Overdue Email Notifications","modified":"2026-06-25T18:56:15.546031303Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["<2.3.0"],"fixed":["2.3.0"]}]},{"id":"GO-2026-5111","url":"https://osv.dev/vulnerability/GO-2026-5111","summary":"Vikunja has HTML Injection via Task Titles in Overdue Email Notifications in code.vikunja.io/api","modified":"2026-06-25T18:45:20.962906531Z","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."]}