Improper Validation of Unsafe Equivalence in Input The advisory has been revoked - it doesn't affect any version of package host-metering (opens in a new tab)

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0.66% (48^th percentile)

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Snyk IDSNYK-CENTOS7-HOSTMETERING-17283796
published10 Jun 2026
disclosed22 May 2026

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Introduced: 22 May 2026

CVE-2026-39821 (opens in a new tab) CWE-1289 (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream host-metering package and not the host-metering package as distributed by Centos.

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode("xn--example-.com") incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject "example.com" but permit "xn--example-.com". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name "example.com".