CVE-2026-117535 REDAXO before 5.21.3 Reflected XSS via opener_link in Media Pool
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-117535?
CVE-2026-117535 is a medium-severity vulnerability in redaxo core, published on 27 Oct 2026.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-117535?
How do I fix CVE-2026-117535?
No fix has been published for CVE-2026-117535 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-117535 being exploited?
There is no known exploitation of CVE-2026-117535 in the wild and no public exploit code.
Sources
Also known as GHSA-5293-gg47-5xmh, GHSA-pmxw-f2gq-hx4c.