CVE-2026-3368Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter Name
- 7.2HighCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 72% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Injection Guard plugin for WordPress is vulnerable to Stored Cross-Site Scripting via malicious query parameter names in all versions up to and including 1.2.9. This is due to insufficient input sanitization in the sanitize_ig_data() function which only sanitizes array values but not array keys, combined with missing output escaping in the ig_settings.php template where stored parameter keys are echoed directly into HTML. When a request is made to the site, the plugin captures the query string via $_SERVER['QUERY_STRING'], applies esc_url_raw() (which preserves URL-encoded special characters like %22, %3E, %3C), then passes it to parse_str() which URL-decodes the string, resulting in decoded HTML/JavaScript in the array keys. These keys are stored via update_option('ig_requests_log') and later rendered without esc_html() or esc_attr() on the admin log page. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in the admin log page that execute whenever an administrator views the Injection Guard log interface.
Timeline
ID reserved
By Wordfence
- 21 days later
· 21 days later
Published
- 19 days later
· 19 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Deferred | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
fahadmahmood · Injection Guard
- affected ≤ 1.2.9
References
References18
- https://www.wordfence.com/threat-intel/vulnerabilities/id/15d9817c-910d-4ce1-a5fb-67a2b6580e16?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L94 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L120 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L121 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L121 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L120 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L124 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L124 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L94 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L105 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L105 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L8 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L8 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L153 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L153 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L49 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L49 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3482741%40injection-guard&new=3482741%40injection-guard&sfp_email=&sfph_mail= (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-13918 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-3368)Record last updated .