Live › vulnerability › CVE-2026-117538
Go to dashboardREDAXO versions before 5.21.0 echo the packages API function parameter into an error message without HTML escaping. An attacker who lures a logged-in backend user to a crafted link can run JavaScript in that user's session, acting on the same origin and reading page data.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-27 11:31 UTC. All times on this page are UTC.
Sites running REDAXO before 5.21.0 with a backend where users log in, since the attack needs an authenticated backend user to open a crafted link. Public-only sites with no backend users are less exposed. unknown whether any non-default configuration is required.
No product ranges from the sources yet.
redaxo/src/core/boot.php version constant; unknown whether the sources give a exact command5.21.05.21.0 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability in the backend packages API, where the function parameter is concatenated into an error message rendered without HTML escaping. Attackers can lure an authenticated backend user to a crafted link containing a valid CSRF token, executing JavaScript that performs same-origin actions or reads DOM data.
This page as .md · .json · in your agent: get_signal("CVE-2026-117538")
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.