CVE-2026-74244Network attack vectorHinoki check available

Unauthenticated billing-event forgery via unsigned webhooks

Published Aug 14, 2026 · Updated Aug 14, 2026

Improper signature verification in Red Hat Quay billing allows remote attackers to forge Stripe events via crafted JSON requests. The /webhooks/stripe handler parses attacker-controlled event JSON and applies billing-event effects without validating the Stripe-Signature header. The endpoint remains exposed even when billing is disabled; successful requests reset a namespace build quota to its maximum and send unsolicited administrator email, while FakeStripe limits self-hosted impact.

CVSS severity5.9
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper signature verification in Red Hat Quay billing allows remote attackers to forge Stripe events via crafted JSON requests. The /webhooks/stripe handler parses attacker-controlled event JSON and applies billing-event effects without validating the Stripe-Signature header. The endpoint remains exposed even when billing is disabled; successful requests reset a namespace build quota to its maximum and send unsolicited administrator email, while FakeStripe limits self-hosted impact.

The record

CVE
CVE-2026-74244
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-347, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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 privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat QuayAffected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift Update ServiceAffected versions are unavailable in this record.

Published CVSS scores

5.9Red Hat, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1190Exploit Public-Facing Application

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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