CVE-2026-5950 Affecting bind package, versions <9.20.23-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.14% (35th percentile)

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  • Snyk IDSNYK-ALPINE323-BIND-16800461
  • published23 May 2026
  • disclosed20 May 2026

Introduced: 20 May 2026

NewCVE-2026-5950  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 bind to version 9.20.23-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind package and not the bind package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

CVSS Base Scores

version 3.1