CVE-2026-116900

MEDIUM 5.4

REDAXO before 5.21.4 Stored XSS via Media and Link Input Widgets

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

REDAXO before 5.21.4 contains a stored cross-site scripting vulnerability that allows content editors to inject HTML by storing unescaped values rendered by media, medialist, link and linklist widgets. Attackers can submit crafted REX_INPUT_MEDIA or REX_INPUT_LINK values that break out of the value attribute, executing script in administrators' backend sessions to hijack accounts.

CWE	CWE-79
Vendor	redaxo
Product	core
Published	Oct 27, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

redaxo / core

0 < 5.21.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/redaxo/core/security/advisories/GHSA-5wmj-5x79-rr87 vulncheck.com: https://www.vulncheck.com/advisories/redaxo-before-5.21.4-stored-xss-via-media-and-link-input-widgets

Credits

🔍 V-C-Williams