Medium · CVSS 5.3CVE-2026-103327

CryptoCloud - Crypto Payment Gateway 3.0.0 - 3.0.1 - Unauthenticated Arbitrary Order Payment Forgery via Empty-Default Webhook SecretCVE-2026-103327

Answer in brief

CVE-2026-103327 records a Medium severity (CVSS 5.3) vulnerability in CryptoCloud - Crypto Payment Gateway 3.0.0 - 3.0.1 - Unauthenticated Arbitrary Order Payment Forgery via Empty-Default Webhook Secret. The current sources do not mark it as known exploited. The current feed maps Unknown/CryptoCloud (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 3, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/CryptoCloud (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/CryptoCloudgeneric	>=3.0.0 <=3.0.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/CryptoCloud.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 3, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

The CryptoCloud WordPress plugin from 3.0.0 through 3.0.1 does not verify the authenticity of the payment notifications received by its gateway callback, as the integrity check is skipped while the webhook secret is left at its empty default, allowing unauthenticated attackers to mark arbitrary orders as paid or failed without any payment being made.

Quoted source text, attributed separately from HOL analysis.

Eupago Gateway For Woocommerce 4.5.0 - 4.7.5 - Unauthenticated Payment Confirmation BypassAlso CWE-345