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CVE-2026-89145

Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directory

CVSS 4.0 2.4 LOWCVSS 3.1 4.2 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-89145

Published

Flextype CMS versions 0.9.9 through 1.0.0-alpha.3 fail to HTML-escape plugin directory names in the dependency error page rendered by getValidPluginsDependencies(). Attackers with write access to the plugins directory can create a plugin with HTML characters in its name to execute arbitrary scripts in users' browsers when dependency validation fails.

Read the publisher's advisory

Affected versions, risk and source history

Exploitation and risk

Source status

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cve-program · CVE-2026-89145

Published

Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directory

Flextype CMS versions 0.9.9 through 1.0.0-alpha.3 fail to HTML-escape plugin directory names in the dependency error page rendered by getValidPluginsDependencies(). Attackers with write access to the plugins directory can create a plugin with HTML characters in its name to execute arbitrary scripts in users' browsers when dependency validation fails.

Source published
11 Sep 2026 01:14:20 UTC
Source modified
11 Sep 2026 14:25:37 UTC
Saved here
23 Oct 2026 15:48:27 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 2.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1 · 4.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Nov 23:34 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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