PT-2021-20622 · WordPress · Custom Post Type Relations

P7E4 · Published 2021-08-16 · Updated 2021-08-24 · CVE-2021-34654

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Custom Post Type Relations WordPress plugin version 1.0 and earlier

Description: The issue allows attackers to inject arbitrary web scripts via the cptr[name] parameter found in the ~/pages/admin-page.php file, enabling Reflected Cross-Site Scripting attacks.

Recommendations: For Custom Post Type Relations WordPress plugin version 1.0 and earlier, update to a version later than 1.0 to resolve the issue. As a temporary workaround, consider restricting access to the ~/pages/admin-page.php file to minimize the risk of exploitation. Avoid using the cptr[name] parameter in the affected endpoint until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-34654

Affected Products

Custom Post Type Relations

References · 6

• 🔥 https://plugins.trac.wordpress.org/browser/custom-post-type-relations/trunk/pages/admin-page.php#L60 · Exploit
• 🔥 https://wordfence.com/vulnerability-advisories/#CVE-2021-34654 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-34654 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34654 · Vendor Advisory
• https://t.me/cvenotify/19457 · Telegram Post
• https://t.me/cvenotify/19988 · Telegram Post