4.1
MediumCVSS 3.1 · from VulnCheck
CVE-2026-117538
REDAXO before 5.21.0 Reflected XSS via Packages API function Parameter
core · Cross-site scripting · CWE-79Affectedcore
FixUpdate to 5.21.0 or newer
PublishedOct 27, 10:59 · VulnCheck
ScoredOct 27 · 4.1 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:10 UTC
What we know
No known exploitation. CISA KEV, checked 22:10 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker needs network access and an account. CVSS: network, high privileges.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
Description
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.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed incorebefore 5.21.05.21.0coreNot affected5.21.0
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known