Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
A security update for Red Hat Hardened Images RPMs addresses multiple vulnerabilities in the trivy package, including CVE-2026-15788. This specific flaw in BuildKit allows an untrusted user on a Windows Container on Windows (WCOW) configured BuildKit daemon to read arbitrary files from the host system due to improper handling of NTFS directory junctions, resulting in information disclosure. The vulnerabilities are rated high severity by Red Hat. No explicit patch version is provided, but an updated trivy RPM version 0.72.0-0.1.2.hum1 is available. No known exploits in the wild have been reported.
AI Analysis
Technical Summary
The advisory covers security fixes for Red Hat Hardened Images RPMs, specifically the trivy package version 0.72.0-0.1.2.hum1. Among the fixed issues is CVE-2026-15788, a path traversal vulnerability (CWE-22) in BuildKit that allows an untrusted user authoring a build on a Windows Container on Windows configured BuildKit daemon to read arbitrary files on the host system. This occurs due to improper handling of NTFS directory junctions, leading to information disclosure. The vulnerability has a high impact on confidentiality but does not affect integrity or availability. Red Hat has released updated RPMs to address these issues. The advisory references additional CVEs (CVE-2026-15792 and CVE-2026-56852) fixed in the same update. Red Hat's CVSS scoring differs from other sources due to product-specific factors. No known active exploitation has been reported.
Potential Impact
The primary impact is information disclosure, allowing an untrusted user on a Windows Container on Windows configured BuildKit daemon to read arbitrary files from the host system. This can expose sensitive data and potentially bypass security mechanisms relying on file confidentiality. There is no reported impact on integrity or availability. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
Red Hat has released updated trivy RPM packages (version 0.72.0-0.1.2.hum1) that address these vulnerabilities. Users of Red Hat Hardened Images should apply this update promptly to remediate the issues. Since this is not a cloud service, remediation requires applying the updated RPMs. No additional mitigation steps are specified by Red Hat. Patch status is confirmed by the vendor advisory.
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Description
A security update for Red Hat Hardened Images RPMs addresses multiple vulnerabilities in the trivy package, including CVE-2026-15788. This specific flaw in BuildKit allows an untrusted user on a Windows Container on Windows (WCOW) configured BuildKit daemon to read arbitrary files from the host system due to improper handling of NTFS directory junctions, resulting in information disclosure. The vulnerabilities are rated high severity by Red Hat. No explicit patch version is provided, but an updated trivy RPM version 0.72.0-0.1.2.hum1 is available. No known exploits in the wild have been reported.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers security fixes for Red Hat Hardened Images RPMs, specifically the trivy package version 0.72.0-0.1.2.hum1. Among the fixed issues is CVE-2026-15788, a path traversal vulnerability (CWE-22) in BuildKit that allows an untrusted user authoring a build on a Windows Container on Windows configured BuildKit daemon to read arbitrary files on the host system. This occurs due to improper handling of NTFS directory junctions, leading to information disclosure. The vulnerability has a high impact on confidentiality but does not affect integrity or availability. Red Hat has released updated RPMs to address these issues. The advisory references additional CVEs (CVE-2026-15792 and CVE-2026-56852) fixed in the same update. Red Hat's CVSS scoring differs from other sources due to product-specific factors. No known active exploitation has been reported.
Potential Impact
The primary impact is information disclosure, allowing an untrusted user on a Windows Container on Windows configured BuildKit daemon to read arbitrary files from the host system. This can expose sensitive data and potentially bypass security mechanisms relying on file confidentiality. There is no reported impact on integrity or availability. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
Red Hat has released updated trivy RPM packages (version 0.72.0-0.1.2.hum1) that address these vulnerabilities. Users of Red Hat Hardened Images should apply this update promptly to remediate the issues. Since this is not a cloud service, remediation requires applying the updated RPMs. No additional mitigation steps are specified by Red Hat. Patch status is confirmed by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:46988
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-56852"]
- Cvss Version
- null
Threat ID: 6a74cf8fbf8831d5391aecc1
Added to database: 08/06/2026, 18:16:47 UTC
Last enriched: 08/06/2026, 18:42:44 UTC
Last updated: 08/07/2026, 03:40:59 UTC
Views: 4
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