CVE-2026-115507GHSA-rp33-8f2m-hm6j
Vikunja 2.2.0 before 2.7.1 HTML Injection via Notification Email Header
go-vikunja vikunja
CVSS
5.1MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2.7.1vikunjaCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
Vikunja 2.2.0 before 2.7.1 contains an HTML injection vulnerability in CreateConversationalHeader in pkg/notifications/mail.go that interpolates display names and task and project titles raw into email anchors. Authenticated users can craft titles or display names that close the anchor and inject phishing links into task-comment and task-mention notification emails sent to project members.
Text from CVE List
Affected versions 2
- vikunjaaffected: 2.2.0 before 2.7.1CVE List
- vikunjaunaffected: 2.7.1CVE List
References 6
- github.com/go-vikunja/vikunja/commit/18ff05932632c65dbc90a88118597989c6af4bf9Fixvia CVE List
- github.com/go-vikunja/vikunja/releases/tag/v2.7.1Fixvia CVE List
- github.com/go-vikunja/vikunja/security/advisories/GHSA-rp33-8f2m-hm6jAdvisoryvia CVE List
- vulncheck.com/advisories/vikunja-2.2.0-before-2.7.1-html-injection-via-notification-email-headerAdvisoryvia CVE List
- github.com/go-vikunja/vikunja/blob/v2.7.0/pkg/notifications/mail.go#L132-L148Referencevia CVE List
- github.com/go-vikunja/vikunjaReferencevia CVE List