CRITICALCVSS 9.1EPSS 0.3%

CVE-2026-50886

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

Published: 2026-06-15
Modified: 2026-08-27
EPSS percentile: 23%
Aliases: GHSA-9mmg-q95p-gp67
Sources: github-advisory

Summary

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 packages

Ecosystem	Package	Affected versions	Fixed versions
Packagist	grumpydictator/firefly-iii	—	—

Remediation: No patched version is listed by GitHub.

References

https://github.com/advisories/GHSA-9mmg-q95p-gp67

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.