CVE-2026-122323
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Nov 05, 2026
Vendor
unknown
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.