CVE-2026-13238Network attack vector

Payment response forgery via missing signature validation

Published Jul 10, 2026 · Updated Jul 10, 2026

Incorrect authorization in Drupal Commerce Realex / Global Payments before 3.0.2 allows remote attackers to forge redirect payment responses. The redirect handler accepts a Global Payments HPP response without cryptographically validating its signature against the merchant shared secret. Only gateways configured for full-page redirects are exposed; the lightbox flow validates the signature, and a forged response can alter payment-processing state.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Drupal Commerce Realex / Global Payments before 3.0.2 allows remote attackers to forge redirect payment responses. The redirect handler accepts a Global Payments HPP response without cryptographically validating its signature against the merchant shared secret. Only gateways configured for full-page redirects are exposed; the lightbox flow validates the signature, and a forged response can alter payment-processing state.

The record

CVE
CVE-2026-13238
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Avatar Uploader Project
Product
Commerce Realex / Global Payments
Classifications
T1565
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <3.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Avatar Uploader Project · Commerce Realex / Global Paymentsversion=0.0.0 <3.0.2

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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

T1565Data Manipulation

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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