CVE-2026-129170
Deferred Deferred - Pending Action

Stored XSS in FileCodeBox via Malicious Markdown Preview

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: VulnCheck

Description
FileCodeBox 2.2.1 through 2.8.4 contains a stored cross-site scripting vulnerability in renderMarkdownPreview, which returns unsanitized text when the marked parser throws. Unauthenticated attackers can share text with thousands of nested blockquote markers followed by HTML payloads, executing script that steals the admin token from localStorage.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-129170
EUVD
EUVD-2026-125597

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
vastsa FileCodeBox From 2.2.1 (inc) to 2.8.4 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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