CVE-2026-74243

What it is

A flaw was found in Red Hat Quay. When the SECURITY_SCANNER_V4_PSK (pre-shared key) is not set, a remote unauthenticated attacker can send POST requests to the security scanner notification endpoint. This allows the attacker to flood the notification queue and inject path traversal characters into Clair API URL paths. The primary consequence is worker resource exhaustion and blind path manipulation on the configured Clair host, potentially leading to a denial of service.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-08-14 23:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-08-20 19:49 UTC Last updatedMost recent change to the record

Details

Published

2026-08-14 23:16 UTC

Last modified

2026-08-20 19:49 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-306 · Missing authentication

Record status

Analyzed

Affected

• Redhat Openshift Update Service
• Redhat Quay 3.0.0

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low