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.
References7
- github.com/go-vikunja/vikunja
- github.com/go-vikunja/vikunja/blob/v2.7.0/pkg/notifications/mai…
- github.com/go-vikunja/vikunja/commit/18ff05932632c65dbc90a88118…
- github.com/go-vikunja/vikunja/releases/tag/v2.7.1
- github.com/go-vikunja/vikunja/security/advisories/GHSA-rp33-8f2…
- www.vulncheck.com/advisories/vikunja-2.2.0-before-2.7.1-html-in…
- github.com/go-vikunja/vikunja/security/advisories/GHSA-rp33-8f2…
Metrics
- CVSS 3.1
-
3.5
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - CVSS 4.0
-
5.1
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 21 · as of 8 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.