Low 3.5Published Oct 22, 2026

CVE-2026-115507Vikunja 2.2.0 before 2.7.1 HTML Injection via Notification Email Header

Updated under an hour ago (Oct 28, 2026, 1:50 PM ET)

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Every CVE for go-vikunja vikunja

Exploited in the last 30 days

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.

CVSS: 3.5 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 22, 2026

Affected products

Affected products

go-vikunja vikunja go_vikunja:vikunja (from the name)	from 2.2.0 before 2.7.1; 2.7.1 not affected	CNA record

References

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rp33-8f2m-hm6j	vendor-advisory
https://github.com/go-vikunja/vikunja/commit/18ff05932632c65dbc90a88118597989c6af4bf9	patch
https://github.com/go-vikunja/vikunja/blob/v2.7.0/pkg/notifications/mail.go#L132-L148	technical-description
https://github.com/go-vikunja/vikunja/releases/tag/v2.7.1	release-notes
https://github.com/go-vikunja/vikunja	product
https://www.vulncheck.com/advisories/vikunja-2.2.0-before-2.7.1-html-injection-via-notification-email-header	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.