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CVE-2025-71164: Typesetter CMS Reflected XSS via Editing.php

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-14 · updated 2026-07-14
• Weakness: CWE-79

Description

Typesetter CMS versions up to and including 5.1 contain a reflected cross-site scripting (XSS) vulnerability in the Editing component. The images parameter (submitted as images[] in a POST request) is reflected into an HTML href attribute without proper context-aware output encoding in include/tool/Editing.php. An authenticated attacker with editing privileges can supply a JavaScript pseudo-protocol (e.g., javascript:) to trigger arbitrary JavaScript execution in the context of the victim's browser session.

Affected products

• Typesetter: through 5.1

References

• https://github.com/Typesetter/Typesetter
• https://github.com/Typesetter/Typesetter/issues/706
• https://www.vulncheck.com/advisories/typesetter-cms-reflected-xss-via-editing-php

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