CVE-2026-117535
REDAXO before 5.21.3 Reflected XSS via opener_link in Media Pool
- State
- Published
- Severity
- 5.1 Medium
- Published
- Oct 27, 2026
- Updated
- Oct 27, 2026
- Reserved
- Oct 27, 2026
Description
REDAXO before 5.21.3 contains a reflected cross-site scripting vulnerability in the backend media pool detail page, where the opener_link parameter is rendered without HTML escaping. Unauthenticated attackers can lure logged-in backend users with media permissions into clicking a crafted link. The injected script can then read the CSRF token and perform actions with the victim's permissions, including code execution via template or module edits when the victim is an administrator.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/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 |
|
References
- GitHub Security Advisory (GHSA-5293-gg47-5xmh)vendor-advisory
- VulnCheck Advisory: REDAXO before 5.21.3 Reflected XSS via opener_link in Media Poolthird-party-advisory
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