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

MEDIUM 4.3CVE-2021-3921 · GHSA-q2cv-94xm-qvg4 · Published 13/11/2021 · updated 17/06/2026

In short

CVE-2021-3921 is a MEDIUM (CVSS 4.3) vulnerability affecting grumpydictator/firefly-iii, firefly iii (firefly-iii).
Chance of exploitation in the next 30 days (EPSS): 0.44%, higher than 38.6% of all vulnerabilities.
Fix: update to 5.6.3 or later.

Package	Affected versions	Patched versions
grumpydictator/firefly-iii Packagist	`< 5.6.3`	`5.6.3`
firefly iii firefly-iii	`< 5.6.3`	`5.6.3`

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

NVD description

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

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Package

Affected versions

Patched versions

Packagist

< 5.6.3

5.6.3

< 5.6.3

5.6.3

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