Denial of Service Vulnerability in Claircore's RPM Package Scanner
CVE-2026-19519

4.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Advanced Cluster Security 4
Red Hat Quay 3
Vendor
CVE Published:
11 August 2026

What is CVE-2026-19519?

A flaw exists within Claircore's RPM package scanner that can be exploited by providing specially crafted RPM header data within a container layer. This triggers an unchecked type assertion, causing the scanner to panic and resulting in a crash of the Clair indexer process. As a consequence, the service becomes unavailable, leading to denial of service issues that could impact users relying on this functionality for security scanning and monitoring.

References

https://access.redhat.com/security/cve/CVE-2026-19519
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2513781
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Arpit Jain (GitHub handle: arpitjain099) for reporting this issue.
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