Red Hat Security Advisory: skopeo security update
The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files. Security Fix(es): * crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281) * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The skopeo command in Red Hat Enterprise Linux 10.0 Extended Update Support is affected by three denial of service vulnerabilities in the Go crypto libraries: CVE-2026-32280 and CVE-2026-32281 in crypto/x509 related to inefficient certificate chain validation and chain building, and CVE-2026-32283 in crypto/tls related to multiple TLS 1.3 key update messages. These issues can cause denial of service conditions when processing certificates or TLS messages. Red Hat has issued an important security advisory RHSA-2026:20571 providing updated skopeo packages that fix these vulnerabilities.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in skopeo by exploiting inefficient certificate chain validation and TLS 1.3 key update message handling. This could disrupt container image inspection and verification operations relying on skopeo. There are no known exploits in the wild at this time.
Mitigation Recommendations
An updated skopeo package (version 1.18.1-3.el10_0.2) is available from Red Hat for Red Hat Enterprise Linux 10.0 Extended Update Support across multiple architectures. Users should apply this official security update promptly to remediate the denial of service vulnerabilities. Refer to Red Hat advisory RHSA-2026:20571 and https://access.redhat.com/articles/11258 for update instructions.
Red Hat Security Advisory: skopeo security update
Description
The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files. Security Fix(es): * crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281) * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The skopeo command in Red Hat Enterprise Linux 10.0 Extended Update Support is affected by three denial of service vulnerabilities in the Go crypto libraries: CVE-2026-32280 and CVE-2026-32281 in crypto/x509 related to inefficient certificate chain validation and chain building, and CVE-2026-32283 in crypto/tls related to multiple TLS 1.3 key update messages. These issues can cause denial of service conditions when processing certificates or TLS messages. Red Hat has issued an important security advisory RHSA-2026:20571 providing updated skopeo packages that fix these vulnerabilities.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in skopeo by exploiting inefficient certificate chain validation and TLS 1.3 key update message handling. This could disrupt container image inspection and verification operations relying on skopeo. There are no known exploits in the wild at this time.
Mitigation Recommendations
An updated skopeo package (version 1.18.1-3.el10_0.2) is available from Red Hat for Red Hat Enterprise Linux 10.0 Extended Update Support across multiple architectures. Users should apply this official security update promptly to remediate the denial of service vulnerabilities. Refer to Red Hat advisory RHSA-2026:20571 and https://access.redhat.com/articles/11258 for update instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:20571
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-32281","CVE-2026-32283"]
- Cvss Version
- null
Threat ID: 6a16096de29bf47b5063413d
Added to database: 05/26/2026, 20:58:21 UTC
Last enriched: 07/30/2026, 10:50:51 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 47
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