Medium severity · published Oct 27, 2026
CVE-2026-117533
REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG Uploads
New
4.4
CVSS
–
EPSS
No
On KEV
Description
REDAXO from 5.18.0 before 5.21.4 contains a stored cross-site scripting vulnerability because rex_media_service moves uploaded SVG files into the public media folder before sanitizing them. Authenticated users with mediapool upload rights can race the sanitizer or exhaust memory limits to leave script-laden SVGs publicly served, executing scripts in victims' backend sessions.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
core · redaxo
5.18.0 before 5.21.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-117533
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-117533
github.com
https://github.com/redaxo/core/security/advisories/GHSA-2p3g-jr7p-qwwx
www.vulncheck.com
https://www.vulncheck.com/advisories/redaxo-5.18.0-before-5.21.4-stored-xss-via-unsanitized-mediapool-svg-uploads
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