What’s Vulnerable › Vulnerabilities

CVE-2021-4015: Cross-Site Request Forgery (CSRF) in firefly-iii/firefly-iii

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-01 · updated 2026-06-17
• Weakness: CWE-352

Description

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

Affected products

• firefly-iii/firefly-iii: before 5.6.4 — fixed in 5.6.4

How to fix

Upgrade to a fixed version: firefly-iii/firefly-iii 5.6.4. Check the vendor advisory for mitigations.

References

• https://github.com/firefly-iii/firefly-iii/commit/518b4ba5a7a56760902758ae0a2c6a392c2f4d37
• https://huntr.dev/bounties/b698d445-602d-4701-961c-dffe6d3009b1
• https://github.com/firefly-iii/firefly-iii/commit/518b4ba5a7a56760902758ae0a2c6a392c2f4d37
• https://huntr.dev/bounties/b698d445-602d-4701-961c-dffe6d3009b1

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