CVE-2025-9849 json
Html Social share buttons <= 2.1.16 - Authenticated (Contributor+) Stored Cross-Site Scripting
published 2025-09-06 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-27057
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 17% 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
- alimuzzamanalim Html Social share buttons
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/d11217ec-55a6-4422-9995-4cc1761d430e?source=cve
- plugins.trac.wordpress.org /browser/html-social-share-buttons/trunk/html-social-share.php#L304
- github.com /alimuzzaman/html-social-share-buttons/blob/a614c9ce5731417edcf01747eacd814c754cc2d4/html-social-share.php#L30
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3355844%40html-social-share-buttons&new=3355844%40html-social-s
Sources
- CVE List CVE-2025-9849
- NVD CVE-2025-9849
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.