Smart Post <= 4.0.9 - Authenticated (Subscriber+) Stored Cross-Site Scripting via User display_name via Author Filter block

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-119160
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-31 09:16:33 UTC
Updated2026-10-31 09:16:33 UTC
DescriptionThe Smart Post – Post Grid, Post Carousel, Post Slider Gutenberg Blocks for Blog & News plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name' parameter in all versions up to, and including, 4.0.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the victim page to contain an Author Filter block alongside a grid or live-filter block, and execution is triggered by a visitor clicking the attacker's author entry in the dropdown — a standard filter interaction requiring no elevated privileges from the victim.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Shapedplugin Smart Post Post Grid Post Carousel Post Slider Gutenberg Blocks For Blog News affected 4.0.9 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/includes/class-templa... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3775298/post-carousel/trunk/blocks/assets/js/script.js [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/assets/js/script.js [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3775298/post-carousel [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/includes/class-templa... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/a5612c16-9629-4869-8ec1-8fba7... [email protected] www.wordfence.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Jacek Sowiński (dzaku) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-29T15:06:10.000ZVendor Notified
CNA2026-10-30T20:12:18.000ZDisclosed

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