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Vulnerability · Published Jul 20, 2026 · Assigned by redhat

CVE-2026-16254Claircore: claircore: denial of service via out-of-bounds slice in claircore's apk installed-database parser

Medium 4.3

In plain English

A medium-severity out-of-bounds read in Red Hat Advanced Cluster Security 4 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 68.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in claircore's apk package scanner. Malformed package-database data in a container layer can cause an out-of-bounds access that panics the scanner. If that panic is not recovered, the Clair indexer process can crash, leading to a denial of service.

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Advanced Cluster Security 4 see references
Red Hat Red Hat Quay 3 see references
Red Hat Red Hat Quay 3 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References