PT-2026-39507 · Unknown · Exponent Cms

Picaro_O · Published 2026-05-10 · Updated 2026-05-10 · CVE-2021-47931

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Exponent CMS version 2.6

Description Authenticated attackers can perform stored cross-site scripting by injecting malicious scripts via the Title and Text Block parameters in the text editing endpoint. This is achieved by injecting iframe payloads with embedded SVG onload events to execute arbitrary JavaScript. Additionally, the application exposes database credentials in responses and lacks brute-force protection on authentication endpoints.

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-2021-47931

Affected Products

Exponent Cms

References · 5

• 🔥 https://exploit-db.com/exploits/50611 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47931 · Security Note
• https://exponentcms.org · Note
• https://vulncheck.com/advisories/exponent-cms-multiple-vulnerabilities-stored-xss-authentication · Note
• https://twitter.com/CVEnew/status/2053537433501999235 · Twitter Post