CVE-2026-109933

Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes

Published Oct 23, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
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': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions otter Blocks
Vendors & Products Wordpress-extensions
Wordpress-extensions otter Blocks
Type Values Removed Values Added
Weaknesses CWE-79
Type Values Removed Values Added
Description The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.
Title Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 23, 2026, 10:46 AM
Reserved
Oct 13, 2026, 11:14 AM
Status
Deferred
Published
Oct 23, 2026, 6:17 AM
Modified
Oct 23, 2026, 2:20 PM