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.
Published: 2026-11-05
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 05 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
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.
Title Kyverno from 1.11.0 before 1.19.2 Memory Exhaustion via Notary Attestation Decompression
First Time appeared Kyverno
Kyverno kyverno
Weaknesses CWE-409
CPEs cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*
Vendors & Products Kyverno
Kyverno kyverno
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-05T02:25:20.692Z

Reserved: 2026-11-04T23:26:08.934Z

Link: CVE-2026-122322

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-05T03:17:25.187

Modified: 2026-11-05T03:17:25.187

Link: CVE-2026-122322

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-05T03:45:17Z

Weaknesses
  • CWE-409

    Improper Handling of Highly Compressed Data (Data Amplification)