Html Social share buttons <= 2.1.16 - Authenticated (Contributor+) Stored Cross-Site Scripting
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Html Social share buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'zm_sh_btn' shortcode in all versions up to, and including, 2.1.16 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| alimuzzamanalim | Html Social share buttons | up to 2.1.16 | — | No fix listed | CNA |
- Html Social share buttons Vendoralimuzzamanalim Affected up to 2.1.16 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9849
- 2026-10-03 Alias added: GHSA-2phf-fxqr-gpvg
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d11217ec-55a6-4422-9995-4cc1761d430e?source=cve
- https://plugins.trac.wordpress.org/browser/html-social-share-buttons/trunk/html-social-share.php#L304
- https://github.com/alimuzzaman/html-social-share-buttons/blob/a614c9ce5731417edcf01747eacd814c754cc2d4/html-social-share.php#L307
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3355844%40html-social-share-buttons&new=3355844%40html-social-share-buttons&sfp_email=&sfph_mail=#file4
Sources
- CVE-2025-9849 · CVE Program
- CVE-2025-9849 · NVD
- FIRST EPSS
- GHSA-2phf-fxqr-gpvg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences