CVE-2026-122323
7.5, highKyverno from 1.11.0 before 1.19.2 contains an unbounded decompression vulnerability in FetchSignatureBlob that allows attackers to…
- CVSS
- 7.5, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 5 Nov 2026today
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.
Details
- Vendor
- Kyverno
- Product
- kyverno
- Weakness
- CWE-409 (opens in a new tab)
- Status
- Received
- Updated
- 5 Nov 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References 2
Advisories 1
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Kyverno CVEs
Every Kyverno CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-122302 kyverno Improper Privilege Management Vulnerability 9.8, critical
- CVE-2026-122303 kyverno Missing Authorization Vulnerability 9.9, critical
- CVE-2026-122304 kyverno Incorrect Authorization Vulnerability 9.9, critical
- CVE-2026-122310 Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose… 9.9, critical
- CVE-2026-122311 kyverno Path Traversal Vulnerability 9.9, critical
- CVE-2026-122313 kyverno Improper Privilege Management Vulnerability 9.9, critical
- CVE-2026-122321 kyverno Time-of-Check Time-of-Use Race Condition Vulnerability 9.1, critical
- CVE-2026-122305 Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang… 7.7, high
Beyond this page
Is CVE-2026-122323 in your network?
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 5 Nov 2026, not the live upstream state.