8.8
HighCVSS 3.1 · from VulnCheck
CVE-2026-117536
REDAXO before 5.21.3 CSRF Token Bypass via users/users Privilege Escalation
core · Cross-site request forgery · CWE-352Affectedcore
FixUpdate to 5.21.3 or newer
PublishedOct 27, 10:59 · VulnCheck
ScoredOct 27 · 8.8 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:08 UTC
What we know
No known exploitation. CISA KEV, checked 22:08 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
Someone has to open, click or run something first. CVSS: user interaction required.
A successful attack can read and change data and take the service down. CVSS: high impact on confidentiality, integrity and availability.
Description
REDAXO before 5.21.3 contains a cross-site request forgery vulnerability in the backend user administration page (users/users) because the CSRF token check only runs when the save parameter is set, while the update path triggered by FUNC_UPDATE does not require it. Attackers can lure a logged-in backend user with the users[] permission to a crafted GET link to grant administrator rights, deactivate accounts, or lock out the sole administrator.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed incorebefore 5.21.35.21.3coreNot affected5.21.3
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known