CVE-2026-93620Network attack vectorHinoki check available

Merchant API secret disclosure via checkout responses

Published Sep 23, 2026 · Updated Sep 23, 2026

Information disclosure in PayPlus Payment Gateway 8.2.5 and earlier allows remote attackers to obtain the merchant API secret key. The Blocks support class inserts the merchant secret into public WooCommerce Blocks payment data and the Store API checkout response. A site must have the plugin configured with a merchant secret; possession of that key permits forged webhook authentication and gateway-settings changes.

CVSS severity6.5
Medium
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information disclosure in PayPlus Payment Gateway 8.2.5 and earlier allows remote attackers to obtain the merchant API secret key. The Blocks support class inserts the merchant secret into public WooCommerce Blocks payment data and the Store API checkout response. A site must have the plugin configured with a merchant secret; possession of that key permits forged webhook authentication and gateway-settings changes.

The record

CVE
CVE-2026-93620
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
PayPlus LTD
Product
PayPlus Payment Gateway
Classifications
CWE-862, CAPEC-180, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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=n/a <=8.2.5 changes=[{"at":"8.2.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PayPlus LTD · PayPlus Payment Gatewayversion=n/a <=8.2.5 changes=[{"at":"8.2.6","status":"unaffected"}]

Published CVSS scores

6.5Patchstack CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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