Critical severity9.1NVD Advisory· Published Jun 15, 2026· Updated Jun 16, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
grumpydictator/firefly-iiiPackagist	<= 6.5.9	—

Affected products

Firefly Iii/Firefly Iii/firefly Iiiinferred2 versions
<= 6.5.9+ 1 more
- (no CPE)range: <= 6.5.9
- (no CPE)range: =6.5.9
ghsa-coords
pkg:composer/grumpydictator/firefly-iii
Range: <= 6.5.9

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-9mmg-q95p-gp67ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-50886ghsaADVISORY
gist.github.com/pyuysig/f5395f90753ba652835ba9c6abf4c4aenvdWEB

News mentions

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cvss	0.591
epss	0.000
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kev	0.000
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ransomware	0.000