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CVE-2026-123529 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Vikunja before 2.7.1 contains a stored CSS injection vulnerability that allows authenticated users with project write access to inject arbitrary CSS via unsanitized table-cell data-background-color attributes. Attackers can store crafted task descriptions or comments to render full-viewport phishing overlays or force zero-click outbound background-image requests that deanonymize viewers.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:4.6 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-p23m-cq25-pc4j	[email protected]	AdvisoryExploitTechnical AnalysisVendor
https://www.vulncheck.com/advisories/vikunja-before-2.7.1-stored-css-injection-via-tiptap-table-cell-data-background-color	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1021	Improper Restriction of Rendered UI Layers or Frames	[email protected]

Affected Products

Product	Versions
Vikunja	<= 2.7.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 2.7.1moderate effort

Change History

1 change record found show changes