High severity7.5NVD Advisory· Published Nov 5, 2026
CVE-2026-122323
CVE-2026-122323
Description
Kyverno from 1.11.0 before 1.19.2 contains an unbounded decompression vulnerability in FetchSignatureBlob that allows attackers to exhaust memory by supplying highly compressed notary signature layers. Attackers who control registry referrers or signatures can publish small gzip layers that decompress beyond maxPayloadSize, causing admission controller OOM kills and denial of service.
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Affected products
1Patches
Vulnerability mechanics
References
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