What’s Vulnerable › Vulnerabilities

CVE-2025-13617: Apollo13 Framework Extension <= 1.9.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via `a13_alt_link` Parameter

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-19 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Apollo13Themes Apollo13 Framework Extensions: through 1.9.8

References

• https://plugins.trac.wordpress.org/browser/apollo13-framework-extensions/trunk/features/permalinks.php
• 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=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/56be227d-1273-4833-a94e-67abf89f00ba?source=cve

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