PT-2021-17707 · Unknown · Textpattern Cms

Published 2021-08-19 · Updated 2021-08-23 · CVE-2021-28001

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Textpattern CMS version 4.8.4

Description: A cross-site scripting issue was discovered in the Comments parameter, allowing remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The issue is triggered by users visiting the "https://site.com/articles/welcome-to-your-site#comments-head" API endpoint.

Recommendations: For Textpattern CMS version 4.8.4, as a temporary workaround, consider restricting access to the Comments parameter until a patch is available. Avoid using the Comments parameter in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-28001

Affected Products

Textpattern Cms

References · 6

• 🔥 https://exploit-db.com/exploits/49616 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-28001 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28001 · Vendor Advisory
• https://t.me/cibsecurity/27598 · Telegram Post
• https://t.me/cvenotify/19746 · Telegram Post
• https://t.me/cvenotify/19762 · Telegram Post