CVE-2026-122322

High

Description

Kyverno from 1.11.0 before 1.19.2 contains an unbounded decompression vulnerability in extractStatement that allows remote attackers to exhaust memory by supplying highly compressed attestation layers. Attackers controlling registry referrer artifacts can push gzip predicate layers exceeding maxPayloadSize when decompressed, causing admission controller OOM kills and denial of service.

SeverityHigh

CVSS7.5

Exploit probability34. percentile0.4%

ProductKyverno

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-409CWE-409

How to fix

Update

kyverno kyverno1.19.2 or later

Vendor advisories

github.com/kyverno/kyverno/security/advisories/GHSA-3f2c-hfj8-542w

Affected products

Product	Affected versions	Fixed in
kyverno kyverno	1.11.0 ≤ v < 1.19.2	1.19.2

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