CVE-2026-74244: Quay: stripe webhook accepts forged events without signature verification in quay

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-20
Weakness: CWE-347

Description

A flaw was found in Red Hat Quay's Stripe billing webhook handler. This vulnerability allows an unauthenticated attacker to forge billing events by sending crafted JSON requests to the `/webhooks/stripe` endpoint without validating the Stripe-Signature header. Successful exploitation can lead to the unauthorized resetting of a namespace's build quota to its maximum and trigger unsolicited billing emails to namespace administrators.

Affected products

Red Hat OpenShift Update Service: all versions
Red Hat Quay 3: 3.0.0

References

https://access.redhat.com/security/cve/CVE-2026-74244
https://bugzilla.redhat.com/show_bug.cgi?id=2516143

Get alerted when CVE-2026-74244 or the next vulnerability affects your stack