What is GHSA-9mmg-q95p-gp67?

GHSA-9mmg-q95p-gp67 is a security advisory published by GitHub Security Advisories with Critical severity. Project Firefly III has incorrect access control in the webhook management component

Which CVE IDs does GHSA-9mmg-q95p-gp67 cover?

GHSA-9mmg-q95p-gp67 covers the following CVE IDs: CVE-2026-50886. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9mmg-q95p-gp67?

GHSA-9mmg-q95p-gp67 has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

Which products are affected by GHSA-9mmg-q95p-gp67?

GHSA-9mmg-q95p-gp67 affects 1 product, including: composer/grumpydictator/firefly-iii:\u003c= 6.5.9.

GHSA-9mmg-q95p-gp67CriticalCVSS 9.1

Project Firefly III has incorrect access control in the webhook management component

Vendor

GitHub Security Advisories

Published

June 15, 2026

Last Modified

August 27, 2026

🔗 CVE IDs covered (1)

CVE-2026-50886 →

📋 Description

Incorrect access control in the webhook management component of Project Firefly III v6.5.9 allows attackers to scan internal resources via a crafted POST request.

🎯 Affected products1

composer/grumpydictator/firefly-iii:<= 6.5.9

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-50886
https://gist.github.com/pyuysig/f5395f90753ba652835ba9c6abf4c4ae
https://github.com/advisories/GHSA-9mmg-q95p-gp67