CVE-2026-4082ER Swiffy Insert <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
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No exploitation reported and no EPSS estimate yet.
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The ER Swiffy Insert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [swiffy] shortcode in all versions up to and including 1.0.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('n', 'w', 'h'). These attributes are extracted using extract() and directly interpolated into the HTML output without any escaping such as esc_attr(). 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.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Apr 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
erithq ER Swiffy Insert erithq:er_swiffy_insert (from the name) | through 1.0.0 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/074d9712-9b26-47da-9e24-49854fd7257c?source=cve
- https://plugins.trac.wordpress.org/browser/er-swiffy-insert/trunk/er-swiffy-insert.php#L56
- https://plugins.trac.wordpress.org/browser/er-swiffy-insert/tags/1.0.0/er-swiffy-insert.php#L56
- https://plugins.trac.wordpress.org/browser/er-swiffy-insert/trunk/er-swiffy-insert.php#L49
- https://plugins.trac.wordpress.org/browser/er-swiffy-insert/tags/1.0.0/er-swiffy-insert.php#L49
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.