CVE-2026-19538

EUVD-2026-66376
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 28.14%
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Debian Releases
Debian Product
Codename
nsd
bookworm
vulnerable
bullseye
vulnerable
forky
vulnerable
sid
4.15.1-1
fixed
trixie
vulnerable
Common Weakness Enumeration
References
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-19538.txt