CVE record
CVE-2026-8139
Concrete CMS 9.5.0 and below is vulnerable to Stored XSS via external-link page cvName because updateCollectionAliasExternal bypasses being sanitized. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori (Tenzai) for reporting.
Amazon picks for vulnerability response
Product discovery links are localized to Amazon US when country data is available.
This page may contain affiliate links. We may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases.
Hardware security keys
Physical MFA keys for admin accounts, cloud consoles, password managers, and incident response workflows.
Security engineering books
Books on secure design, incident response, threat modeling, cloud security, and practical defense.
Ethernet cable testers
Portable testers for validating office, rack, home lab, and troubleshooting cable runs.
Vulnerability metadata
- Published
- 2026-05-21T16:46:49.533Z
- Modified
- 2026-05-21T16:46:49.533Z
- EPSS
- Not available
- Vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Recommended platforms
Affiliate-supported recommendations for CVE-2026-8139 vulnerability response.
This page may contain affiliate links. We may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases.
Security engineering books
Browse practical security, incident response, cloud security, and secure coding books for team learning.
Cloud security platform
Continuously review cloud posture, exposed services, identity risks, and misconfigurations.
Monitoring and incident response
Track uptime, logs, traces, TLS expiry, API latency, and production security signals.