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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.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-14 | Updated 2026-01-14 | Assigner VulnCheck




MEDIUM: 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unknown

Any version
affected

Credits

Snow1nd finder

Beatriz Fresno Naumova finder

References

github.com/Typesetter/Typesetter product

github.com/Typesetter/Typesetter/issues/706 issue-tracking

www.vulncheck.com/...etter-cms-reflected-xss-via-editing-php third-party-advisory

cve.org (CVE-2025-71164)

nvd.nist.gov (CVE-2025-71164)

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