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  4. CVE 2026 19519 claircore claircore denial of service via
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Back to active CVEs
Medium · CVSS 4.3CVE-2026-19519

Claircore: claircore: denial of service via unchecked type assertion in rpm header parserCVE-2026-19519

Answer in brief

CVE-2026-19519 records a Medium severity (CVSS 4.3) vulnerability in Claircore: claircore: denial of service via unchecked type assertion in rpm header parser. The current sources do not mark it as known exploited. The current feed maps Red Hat/advanced-cluster-security/rhacs-main-rhel8 (generic), Red Hat/advanced-cluster-security/rhacs-main-rhel9 (generic), Red Hat/advanced-cluster-security/rhacs-operator-bundle (generic), Red Hat/advanced-cluster-security/rhacs-rhel8-operator (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 11, 2026Updated Aug 14, 2026Source checked Nov 9, 2026First seen by HOL Aug 11, 2026Material review Aug 14, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.3
Exploitation
Not marked as known exploited
Affected software
11 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/advanced-cluster-security/rhacs-main-rhel8 (generic), Red Hat/advanced-cluster-security/rhacs-main-rhel9 (generic), Red Hat/advanced-cluster-security/rhacs-operator-bundle (generic), Red Hat/advanced-cluster-security/rhacs-rhel8-operator (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/advanced-cluster-security/rhacs-main-rhel8generic*Not reported
Red Hat/advanced-cluster-security/rhacs-main-rhel9generic*Not reported
Red Hat/advanced-cluster-security/rhacs-operator-bundlegeneric*Not reported
Red Hat/advanced-cluster-security/rhacs-rhel8-operatorgeneric*Not reported
Red Hat/advanced-cluster-security/rhacs-rhel9-operatorgeneric*Not reported
Red Hat/advanced-cluster-security/rhacs-roxctl-rhel8generic*Not reported
Red Hat/advanced-cluster-security/rhacs-roxctl-rhel9generic*Not reported
Red Hat/advanced-cluster-security/rhacs-scanner-v4-rhel8generic*Not reported
Red Hat/advanced-cluster-security/rhacs-scanner-v4-rhel9generic*Not reported
Red Hat/quay/clair-rhel8generic*Not reported
Red Hat/quay/clair-rhel9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/advanced-cluster-security/rhacs-main-rhel8, Red Hat/advanced-cluster-security/rhacs-main-rhel9, Red Hat/advanced-cluster-security/rhacs-operator-bundle.
  2. 2Review the reported fix. Source-reported workaround: Where possible, configure the indexer to run scanner workloads in isolated processes or containers so that a single scanner panic cannot terminate the shared indexer. Alternatively, deploy multiple indexer replicas behind a load balancer to reduce the blast radius of a single-process crash.

Evidence timeline and material changes

  1. Published upstream

    Aug 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 11, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in claircore's RPM package scanner. Crafted RPM header data in a container layer can cause an unchecked type assertion to panic the scanner. The panic is not recovered, causing the Clair indexer process to crash, leading to a denial of service.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-617
Source
CVE List V5
Source checked
Nov 9, 2026
References
2 linked sources
Open source record