The VikWidgetsLoader WordPress plugin before 1.12.0 does not sanitise or escape a block attribute before outputting it inside an inline script, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator who reviews the pending submission.

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Advisories

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Fixes

Solution

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Workaround

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History

Sun, 06 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 05 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79

Sat, 05 Sep 2026 06:30:00 +0000

Type Values Removed Values Added
Description The VikWidgetsLoader WordPress plugin before 1.12.0 does not sanitise or escape a block attribute before outputting it inside an inline script, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator who reviews the pending submission.
Title VikWidgetsLoader < 1.12.0 - Contributor+ Stored XSS via Gutenberg Block class_suffix
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-06T10:36:39.520Z

Reserved: 2026-09-02T15:13:26.478Z

Link: CVE-2026-84899

cve-icon Vulnrichment

Updated: 2026-09-06T10:26:42.701Z

cve-icon NVD

Status : Received

Published: 2026-09-05T07:17:14.127

Modified: 2026-09-06T11:18:04.830

Link: CVE-2026-84899

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-06T14:45:07Z

Weaknesses