VDB
CVE-2026-19538
CVE-2026-19538
PUBLISHED
CVSS 8.2 HIGH
Reported by NLnet Labs · Published August 26, 2026
The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open.
Risk Scores
CVSS 4.0
8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| NLnet Labs | NSD | 4.8.0 |
| NLnet Labs | NSD | 4.8.0 |
| alpine | nsd | 0 |
Timeline
- Aug 26, 2026 EPSS Score
- Aug 26, 2026 Coalition ESS Score
- Aug 26, 2026 CVE Published
- Aug 30, 2026 EPSS Score
- Sep 2, 2026 Security Advisory
- Sep 4, 2026 EPSS Score
- Sep 8, 2026 CVE Updated
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score