# CVE-2026-65499: PeproDev Ultimate Invoice broken access control

Source: https://junglewise.ai/threats/cve-2026-65499-peprodev-ultimate-invoice-broken-access-control  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-23. Updated: 2026-07-23  
License: CC BY 4.0 with a link back

CVE-2026-65499 · Severity: medium · CVSS 6.5 · Published 2026-07-23

PeproDev Ultimate Invoice is a WordPress plugin used for managing and generating invoices. A security flaw in versions 2.2.6 and earlier allows unauthorized individuals to perform actions or access data that should be restricted to administrators. This could lead to the exposure of sensitive billing information or unauthorized changes to invoice records.

Technologies: [Pepro Dev. Group Ultimate Invoice](https://junglewise.ai/threats/technologies/ultimate-invoice). Vendors: [Pepro Dev. Group](https://junglewise.ai/threats/vendors/pepro-dev-group).

## Quick answers

**Is CVE-2026-65499 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65499 being exploited in the wild.

**How severe is CVE-2026-65499?** Medium severity, with a CVSS score of 6.5, published 23 July 2026.

**Which products and versions are affected?** Pepro Dev. Group Ultimate Invoice <= 2.2.6.

**Is there a fix for CVE-2026-65499?** 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-2026-65499 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-65499?** 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

The PeproDev Ultimate Invoice plugin for WordPress (versions <= 2.2.6) contains a broken access control vulnerability due to missing authorization checks (CWE-862). An unauthenticated remote attacker can exploit this flaw to execute functions or access resources that should require higher privileges. The vulnerability stems from a lack of proper validation of user permissions or nonce tokens. Successful exploitation could allow an attacker to view or modify invoice-related data. As of the advisory date, no official patch has been released.

## Affected products

- Pepro Dev. Group PeproDev Ultimate Invoice <= 2.2.6

## Timeline

- 2026-03-02: disclosed: Reported by babyhack(@OPCIA) via Patchstack
- 2026-07-23: advisory: NVD and Patchstack published the advisory

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/pepro-ultimate-invoice/vulnerability/wordpress-peprodev-ultimate-invoice-plugin-2-2-6-broken-access-control-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/pepro-ultimate-invoice/vulnerability/wordpress-peprodev-ultimate-invoice-plugin-2-2-6-broken-access-control-vulnerability?_s_id=cve)

## Related threats

- [Pepro Dev. Group PeproDev Ultimate Invoice SSRF](https://junglewise.ai/threats/cve-2026-65516-pepro-dev-group-peprodev-ultimate-invoice-ssrf)
- [Pepro Dev. Group PeproDev Ultimate Invoice unauthenticated XSS](https://junglewise.ai/threats/cve-2026-65510-pepro-dev-group-peprodev-ultimate-invoice-unauthenticated-xss)
- [Pepro Dev. Group PeproDev Ultimate Invoice sensitive data exposure](https://junglewise.ai/threats/cve-2026-27372-pepro-dev-group-peprodev-ultimate-invoice-sensitive-data-exposure)