CVE-2026-117533

REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG Uploads

State: Published
Severity: 2.1 Low
Published: Oct 27, 2026
Updated: Oct 27, 2026
Reserved: Oct 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	2.1 Low	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	VulnCheck
3.1	4.4 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N	VulnCheck

Weaknesses

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

Affected Products

Product	Versions
coreredaxo	5.18.0 to before 5.21.4Affected 5.21.4Not affected

References

GitHub Security Advisory (GHSA-2p3g-jr7p-qwwx)vendor-advisory
VulnCheck Advisory: REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG Uploadsthird-party-advisory

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