PT-2026-35196 · Unknown+1 · Maxsite Cms+1

Konchan · Published 2026-04-26 · Updated 2026-04-26 · CVE-2026-7015

Positive Technologies (AI Summary)

CVSS v2.0

3.3

Low

Base vector

AV:N/AC:L/Au:M/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions MaxSite CMS versions prior to 109.4

Description A cross-site scripting issue exists in the Guestbook Plugin component due to improper processing of the f text, f slug, f limit, and f email arguments. This occurs because of a lack of filtering via the htmlspecialchars() function, which is used to convert special characters to HTML entities to prevent the browser from interpreting them as code. This flaw allows a remote attacker to execute malicious scripts.

Recommendations Update to version 109.4.

Exploit

Fix

XSS

Code Injection

Weakness Enumeration

CWE-79

CWE-94

Related Identifiers

CVE-2026-7015

Affected Products

Guestbook Plugin

Maxsite Cms

References · 11

• 🔥 https://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-guestbook-plugin-maxsite-cms.pdf.pdf · Exploit
• https://github.com/maxsite/cms/releases/tag/v109 · Patch
• https://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-7015 · Security Note
• https://twitter.com/CVEnew/status/2048481060820770890 · Twitter Post
• https://vuldb.com/vuln/359595/cti · Note
• https://twitter.com/VulmonFeeds/status/2048246078915395711 · Twitter Post
• https://github.com/maxsite/cms · Note
• https://twitter.com/CVEarity/status/2048314267473187234 · Twitter Post
• https://vuldb.com/submit/796740 · Note
• https://vuldb.com/vuln/359595 · Note