CVE-2026-19519 Claircore: claircore: denial of service via unchecked type assertion in rpm header parser
Crafted RPM headers in container layers cause a panic in Claircore, crashing the indexer and denying service to Red Hat Quay and ACS users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19519?
CVE-2026-19519 is a medium-severity denial of service vulnerability in Red Hat Advanced Cluster Security 4, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-617
Which versions are affected by CVE-2026-19519?
How do I fix CVE-2026-19519?
No fix has been published for CVE-2026-19519 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-19519 being exploited?
There is no known exploitation of CVE-2026-19519 in the wild and no public exploit code.
Sources
Also known as GHSA-639x-pgq6-48g2.