CVE-2026-39821 The advisory has been revoked - it doesn't affect any version of package knative-serving-1.20 (opens in a new tab)

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1.83% (79^th percentile)

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Snyk IDSNYK-WOLFILATEST-KNATIVESERVING120-18968349
published19 Aug 2026
disclosed22 May 2026

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Introduced: 22 May 2026

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

Amendment

The Wolfi security team deemed this advisory irrelevant for Wolfi:latest.

NVD Description

Note: Versions mentioned in the description apply only to the upstream knative-serving-1.20 package and not the knative-serving-1.20 package as distributed by Wolfi.

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".