CVE-2026-33811 Affecting yggdrasil package, versions <0:0.4.9.2-1.el10_2


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.81% (53rd percentile)

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  • Snyk IDSNYK-CENTOS10-YGGDRASIL-17513148
  • published26 Jun 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

CVE-2026-33811  (opens in a new tab)
CWE-1341  (opens in a new tab)

How to fix?

Upgrade Centos:10 yggdrasil to version 0:0.4.9.2-1.el10_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream yggdrasil package and not the yggdrasil package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

References

CVSS Base Scores

version 3.1