CVE-2026-4083 json
Scoreboard for HTML5 Games Lite <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
published 2026-03-20 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-13929
- 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 12%
- public exploits
- 0
- none known
Summary
The Scoreboard for HTML5 Games Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'scoreboard' shortcode in all versions up to, and including, 1.2. The shortcode function sfhg_shortcode() allows arbitrary HTML attributes to be added to the rendered <iframe> element, with only a small blacklist of four attribute names (same_height_as, onload, onpageshow, onclick) being blocked. While the attribute names are passed through esc_html() and values through esc_attr(), this does not prevent injection of JavaScript event handler attributes like onfocus, onmouseover, onmouseenter, etc., because these attribute names and simple JavaScript payloads contain no characters that would be modified by these escaping functions. The shortcode text is stored in post_content and is only expanded to HTML at render time, after WordPress's kses filtering has already been applied to the raw post content. 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
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% 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
- demonisblack Scoreboard for HTML5 Games Lite
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/550ae348-254e-49f5-8046-38629c774802?source=cve
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/trunk/scoreboard-for-html5-game-lite.php#L274
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/trunk/scoreboard-for-html5-game-lite.php#L320
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/tags/1.2/scoreboard-for-html5-game-lite.php#L320
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/tags/1.2/scoreboard-for-html5-game-lite.php#L274
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/trunk/scoreboard-for-html5-game-lite.php#L317
- plugins.trac.wordpress.org /browser/scoreboard-for-html5-game-lite/tags/1.2/scoreboard-for-html5-game-lite.php#L317
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3483176%40scoreboard-for-html5-game-lite&new=3483176%40scoreboa
Sources
- CVE List CVE-2026-4083
- NVD CVE-2026-4083
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.