CVE-2026-100108 json
Social Share Buttons <= 1.30 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'share_url' Network Setting
published 2026-10-16 24 d ago modified 2026-10-16 24 d ago also EUVD-2026-102817
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
The 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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 24 d ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- maxfoundry Social Share Buttons
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/bc098f5d-3c59-4046-bce8-ac2586e6da19?source=cve
- plugins.trac.wordpress.org /browser/share-button/tags/1.30/classes/class-social-networks.php#L370
- plugins.trac.wordpress.org /browser/share-button/tags/1.30/classes/blocks/network-block.php#L47
- plugins.trac.wordpress.org /browser/share-button/tags/1.30/classes/class-network.php#L275
- plugins.trac.wordpress.org /browser/share-button/tags/1.30/admin/review_notice.php#L26
- plugins.trac.wordpress.org /browser/share-button/tags/1.30/classes/class-social.php#L60
- plugins.trac.wordpress.org /changeset?reponame=&old=3735252%40share-button&new=3735252%40share-button
Sources
- CVE List CVE-2026-100108
- NVD CVE-2026-100108
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.