CVE-2021-3900: Cross-Site Request Forgery in firefly-iii

medium Affects grumpydictator/firefly-iii. Feed 2026.10.29.3, updated 2026-10-29; published 2021-10-28; advisory modified 2023-11-08.

Cross-Site Request Forgery in firefly-iii

Package: grumpydictator/firefly-iii Composer
Affected versions: <=5.6.2
Fixed in: no fix recorded
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 1% (46.0th percentile)
Published: 2021-10-28
Source: osv.dev

References

CWE-352

NVD record grumpydictator/firefly-iii advisories

Am I affected?

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Install docs How findings are ranked

Related advisories

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CVE-2019-13646 medium Firefly III vulnerable to reflected cross-site scripting same package: grumpydictator/firefly-iii
CVE-2019-13647 medium Firefly III vulnerable to image-based stored XSS same package: grumpydictator/firefly-iii
CVE-2021-3663 medium No Restriction of Excessive Authentication Attempts in Firefly III same package: grumpydictator/firefly-iii