Double Free Affecting xeol package, versions <0.10.8-r38


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-XEOL-16638559
  • published11 May 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

NewCVE-2026-33811  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Chainguard xeol to version 0.10.8-r38 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xeol package and not the xeol package as distributed by Chainguard. See How to fix? for Chainguard 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.

CVSS Base Scores

version 3.1