Cross-Site Request Forgery in firefly-iii

HIGH 8.8CVE-2021-3819 · GHSA-356r-77q8-f64f · Published 27/09/2021 · updated 17/06/2026

In short

CVE-2021-3819 is a HIGH (CVSS 8.8) vulnerability affecting grumpydictator/firefly-iii, firefly iii (firefly-iii).
Chance of exploitation in the next 30 days (EPSS): 0.54%, higher than 45.5% of all vulnerabilities.
Fix: update to 5.6.1 or later.

Package	Affected versions	Patched versions
grumpydictator/firefly-iii Packagist	`< 5.6.1`	`5.6.1`
firefly iii firefly-iii	`< 5.6.1`	`5.6.1`

firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF). This has been mitigated in version 5.6.1

NVD description

firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

Packagist

< 5.6.1

5.6.1

< 5.6.1

5.6.1

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