CVE-2026-19519Network attack vector

Service crash via unchecked RPM header type assertion

Published Aug 11, 2026 · Updated Aug 11, 2026

Reachable assertion in Red Hat Quay and RHACS allows remote authenticated users to crash the Clair indexer through a crafted image. The Claircore RPM header parser applies an unchecked type assertion to attacker-controlled header data in a container layer, and the scanning path does not recover the resulting panic. Exploitation requires permission to submit an image for scanning and interrupts indexing until the affected service is restarted.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Red Hat Quay and RHACS allows remote authenticated users to crash the Clair indexer through a crafted image. The Claircore RPM header parser applies an unchecked type assertion to attacker-controlled header data in a container layer, and the scanning path does not recover the resulting panic. Exploitation requires permission to submit an image for scanning and interrupts indexing until the affected service is restarted.

The record

CVE
CVE-2026-19519
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-617, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat QuayAffected versions are unavailable in this record.
389 Directory Server · Red Hat Advanced Cluster Security for KubernetesAffected versions are unavailable in this record.

Published CVSS scores

4.3Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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