5.4
MediumCVSS 3.1 · from VulnCheck
CVE-2026-116900
REDAXO before 5.21.4 Stored XSS via Media and Link Input Widgets
core · Cross-site scripting · CWE-79Affectedcore
FixUpdate to 5.21.4 or newer
PublishedOct 27, 10:59 · VulnCheck
ScoredOct 27 · 5.4 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:07 UTC
What we know
No known exploitation. CISA KEV, checked 22:07 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker needs network access and an account. CVSS: network, low privileges.
Someone has to open, click or run something first. CVSS: user interaction required.
Description
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.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed incorebefore 5.21.45.21.4coreNot affected5.21.4
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known