Social Share Buttons <= 1.30 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'share_url' Network Setting

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-100108
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-16 08:17:12 UTC
Updated2026-10-16 15:16:57 UTC
DescriptionThe Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 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 that the 7-day review-nag timer has elapsed since the attacker's first wp-admin visit, as the nonce needed to reach the save-network handler is only rendered in the DOM once that timer has passed.

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 ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.4MEDIUMCVSS: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 Maxfoundry Social Share Buttons affected 1.30 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social-networks.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-network.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/blocks/network-block.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/share-button/tags/1.30/admin/review_notice.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/bc098f5d-3c59-4046-bce8-ac258... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
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: chimerascope (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-30T15:30:13.000ZVendor Notified
CNA2026-10-15T19:41:23.000ZDisclosed

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