What is CVE-2026-44583?

CVE-2026-44583 is a medium-severity vulnerability in Paymenter, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-07-20.

How severe is CVE-2026-44583?

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

SSRF in Paymenter

CVE-2026-44583

Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allow…

Vulnerability class: SSRF (Server-Side Request Forgery)

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:L/I:N/A:N.

Affected products

Paymenter — versions < 1.5.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

https://github.com/Paymenter/Paymenter/security/advisories/GHSA-7wwh-xcc3-9fcg (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44583?: CVE-2026-44583 is a medium-severity vulnerability in Paymenter, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-07-20.
How severe is CVE-2026-44583?: Medium severity. CVSS v3 base score is 5.3 out of 10.