CVE-2026-116552 json
Like Button Rating ♥ LikeBtn <= 2.6.64 - Unauthenticated Stored Cross-Site Scripting via 'Client-IP' Header
published 2026-10-30 9 d ago modified 2026-10-30 9 d ago also EUVD-2026-114216
- cvss
- 4.7
- 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 23%
- public exploits
- 0
- none known
Summary
The Like Button Rating ♥ LikeBtn plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_CLIENT_IP (Client-IP header)' parameter in all versions up to, and including, 2.6.64 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the site administrator to have disabled the default 'Be GDPR compliant' option, which would otherwise hash stored IP values and neutralize the payload. Successful exploitation additionally requires an action by an administrator — the attacker cannot trigger the vulnerability on their own.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 d ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- likebtn Like Button Rating ♥ LikeBtn
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/4816d767-89fe-403f-ac67-70235d78ce24?source=cve
- plugins.trac.wordpress.org /browser/likebtn-like-button/tags/2.6.64/includes/tab_votes.php#L285
- plugins.trac.wordpress.org /browser/likebtn-like-button/tags/2.6.64/likebtn_like_button.php#L7765
- plugins.trac.wordpress.org /browser/likebtn-like-button/tags/2.6.64/likebtn_like_button.php#L6968
- plugins.trac.wordpress.org /browser/likebtn-like-button/tags/2.6.64/likebtn_like_button.php#L6858
- plugins.trac.wordpress.org /changeset?reponame=&new=3773664%40likebtn-like-button%2Ftags%2F2.6.65&old=3665718%40likebtn-like-button%2Ftag
Sources
- CVE List CVE-2026-116552
- NVD CVE-2026-116552
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.