Auth bypass in Invoiceninja Invoice Ninja
CVE-2026-83743
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (30.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Invoiceninja Invoice Ninja — versions 5.13.0, 5.13.1, 5.13.10
Weakness classification (CWE)
References
- vuldb.com/vuln/397499 (technical-description, vdb-entry)
- vuldb.com/vuln/397499/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-83743 (third-party-advisory)
- vuldb.com/submit/880053 (third-party-advisory)
- ashutosh-jena.in/blog/broken-access-control-idor-in-invoice-ninja-vendor-portal… (exploit)
- github.com/invoiceninja/invoiceninja/commit/f86fd9697ce7bd0d28adbe2e6c589078048… (patch)
- github.com/invoiceninja/invoiceninja/releases/tag/v5.13.27 (patch)
Frequently asked questions
- What is CVE-2026-83743?
- CVE-2026-83743 is a medium-severity vulnerability in Invoiceninja Invoice Ninja, classified under Improper Authorization. CVSS score: 6.3/10. Published 2026-09-01.
- How severe is CVE-2026-83743?
- Medium severity. CVSS v3 base score is 6.3 out of 10.