What’s Vulnerable › Vulnerabilities

CVE-2021-36830: WordPress Comment Guestbook plugin <= 0.8.0 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-30 · updated 2026-06-17
• Weakness: CWE-79

Description

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin <= 0.8.0 at WordPress.

Affected products

• mibuthu Comment Guestbook (WordPress plugin): through 0.8.0

References

• https://patchstack.com/database/vulnerability/comment-guestbook/wordpress-comment-guestbook-plugin-0-8-0-authenticated-stored-cross-site-scripting-xss-vulnerability?_s_id=cve
• https://wordpress.org/plugins/comment-guestbook/
• https://patchstack.com/database/vulnerability/comment-guestbook/wordpress-comment-guestbook-plugin-0-8-0-authenticated-stored-cross-site-scripting-xss-vulnerability?_s_id=cve
• https://wordpress.org/plugins/comment-guestbook/

Get alerted when CVE-2021-36830 or the next vulnerability affects your stack