CVE-2026-50886
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductGrumpydictator/firefly-iii
PublishedJun 15, 2026
First seenJun 15, 2026
Weakness typeCWE-284Improper access control
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| grumpydictator/firefly-iiiPackagist | v ≤ 6.5.9 | — |
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