What is CVE-2026-103327?

CVE-2026-103327 is a medium-severity vulnerability in Cryptocloud, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-11-03.

How severe is CVE-2026-103327?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Cryptocloud

CVE-2026-103327

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.

Published 2026-11-03 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.5th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Cryptocloud

References

wpscan.com/vulnerability/fd5563ed-85c6-4b17-acf6-bdc2cd77dd4b/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103327?: CVE-2026-103327 is a medium-severity vulnerability in Cryptocloud, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-11-03.
How severe is CVE-2026-103327?: Medium severity. CVSS v3 base score is 5.3 out of 10.