CVE-2026-74244

Received Received - Intake

Unauthenticated Stripe Webhook Forgery in Red Hat Quay

Publication date: 2026-08-14

Last updated on: 2026-08-14

Assigner: Red Hat, Inc.

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-14

Last Modified

2026-08-14

Generated

2026-08-15

AI Q&A

2026-08-15

EPSS Evaluated

N/A

NVD

CVE-2026-74244

EUVD

EUVD-2026-58821

Affected Vendors & Products

Vendor	Product	Version / Range
red_hat	quay	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-347	The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Attack-Flow Graph

Executive Summary

This vulnerability is in Red Hat Quay's Stripe billing webhook handler. It allows an unauthenticated attacker to send fake billing events by crafting JSON requests to the /webhooks/stripe endpoint without verifying the Stripe-Signature header. This can reset a namespace's build quota to its maximum and send unwanted billing emails to administrators.

Detection Guidance

Monitor network traffic for unauthorized POST requests to the /webhooks/stripe endpoint without a valid Stripe-Signature header. Check logs for repeated requests or unusual billing event triggers.

Impact Analysis

An attacker could exploit this to reset your build quota, potentially causing service disruptions or unexpected costs. It may also send fraudulent billing emails to administrators, leading to confusion or financial concerns.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling unauthorized changes to billing data and unsolicited email disclosures. Unauthorized quota resets may violate data integrity requirements, while unsolicited billing emails could expose sensitive namespace information to unauthorized recipients, raising privacy concerns under GDPR and HIPAA.

Mitigation Strategies

Update Red Hat Quay to the latest patched version. Ensure the Stripe-Signature header is strictly validated for all requests to /webhooks/stripe. Restrict access to this endpoint via network policies or firewalls.

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