CVE-2026-3659 json
WP Circliful <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute
published 2026-04-15 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-22863
- 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 25%
- public exploits
- 0
- none known
Summary
The WP Circliful plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' shortcode attribute of the [circliful] shortcode and via multiple shortcode attributes of the [circliful_direct] shortcode in all versions up to and including 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, in the circliful_shortcode() function, the 'id' attribute value is concatenated directly into an HTML id attribute (line 285) without any escaping, allowing an attacker to break out of the double-quoted attribute and inject arbitrary HTML event handlers. Similarly, the circliful_direct_shortcode() function (line 257) outputs all shortcode attributes directly into HTML data-* attributes without escaping. 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
- 6 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% 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
- bappidgreat WP Circliful
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/030534e2-bf7d-42e4-94a1-986f629bea15?source=cve
- plugins.trac.wordpress.org /browser/wp-circliful/trunk/wp-circliful.php#L285
- plugins.trac.wordpress.org /browser/wp-circliful/tags/1.2/wp-circliful.php#L285
- plugins.trac.wordpress.org /browser/wp-circliful/trunk/wp-circliful.php#L257
- plugins.trac.wordpress.org /browser/wp-circliful/tags/1.2/wp-circliful.php#L257
- plugins.trac.wordpress.org /browser/wp-circliful/trunk/wp-circliful.php#L263
- plugins.trac.wordpress.org /browser/wp-circliful/tags/1.2/wp-circliful.php#L263
- plugins.trac.wordpress.org /browser/wp-circliful/trunk/wp-circliful.php#L241
- plugins.trac.wordpress.org /browser/wp-circliful/tags/1.2/wp-circliful.php#L241
Sources
- CVE List CVE-2026-3659
- NVD CVE-2026-3659
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.