PT-2026-41452 · Couchcms · Couchcms

Xxcdd · Published 2026-05-16 · Updated 2026-05-17 · CVE-2021-47955

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 CouchCMS version 2.2.1

Description Authenticated attackers can execute arbitrary JavaScript by uploading malicious SVG files through the file upload functionality. This occurs when SVG files containing embedded script tags are uploaded to the 'browse.php' endpoint, leading to script execution in the browsers of users who access or preview these files.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-47955

Affected Products

Couchcms

References · 6

• 🔥 https://exploit-db.com/exploits/49636 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47955 · Security Note
• https://github.com/CouchCMS/CouchCMS · Note
• https://t.me/CVEtracker/54006 · Telegram Post
• https://vulncheck.com/advisories/couchcms-cross-site-scripting-via-svg-file-upload · Note
• https://twitter.com/CVEnew/status/2055866579896647783 · Twitter Post