CVE-2025-13617
Apollo13 Framework Extension <= 1.9.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via `a13_alt_link` Parameter
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Apollo13 Framework Extensions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘a13_alt_link’ parameter in all versions up to, and including, 1.9.8 due to insufficient input sanitization and output 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.
| CWE | CWE-79 |
| Vendor | apollo13themes |
| Product | apollo13 framework extensions |
| Published | Feb 19, 2026 |
| Last Updated | Apr 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for apollo13themes apollo13 framework extensions
Be the first to know when new medium vulnerabilities affecting apollo13themes apollo13 framework extensions are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
apollo13themes / Apollo13 Framework Extensions
0 ≤ 1.9.8
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/56be227d-1273-4833-a94e-67abf89f00ba?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/apollo13-framework-extensions/trunk/features/permalinks.php plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3410555%40apollo13-framework-extensions&new=3410555%40apollo13-framework-extensions&sfp_email=&sfph_mail=
Credits
Craig Smith