CVE-2026-65516: Pepro Dev. Group PeproDev Ultimate Invoice SSRF

CVE-2026-65516 · Severity: high · CVSS 7.2 · Published 2026-07-23

PeproDev Ultimate Invoice is a WordPress plugin used for managing and generating customer invoices. A security flaw in versions 2.2.6 and earlier allows unauthenticated attackers to force the website to make unauthorized requests to internal or external servers. This can lead to the exposure of sensitive internal data or be used to bypass security controls to reach other systems on the network.

Technologies: Pepro Dev. Group Ultimate Invoice. Vendors: Pepro Dev. Group.

Quick answers

Is CVE-2026-65516 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-65516 being exploited in the wild.
How severe is CVE-2026-65516?
High severity, with a CVSS score of 7.2, published 23 July 2026.
Which products and versions are affected?
Pepro Dev. Group Ultimate Invoice <= 2.2.6.
Is there a fix for CVE-2026-65516?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-65516 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-65516?
Check whether you run Pepro Dev. Group Ultimate Invoice at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Server-Side Request Forgery (SSRF) vulnerability exists in the PeproDev Ultimate Invoice plugin for WordPress (versions <= 2.2.6). The flaw allows an unauthenticated remote attacker to submit a crafted request that causes the server to initiate outbound network connections to arbitrary destinations. This can be leveraged to scan internal networks, access metadata services in cloud environments, or interact with other internal services that are not directly accessible from the internet. As of the advisory date, no official patch has been released by the developer.

Affected products

  • Pepro Dev. Group PeproDev Ultimate Invoice <= 2.2.6

Timeline

  • 2026-05-22: other: Reported by researcher longnv719
  • 2026-07-23: disclosed: Vulnerability published by Patchstack and NVD

References

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