GHSA-5q8v-j673-m5v4: Firefly III user API endpoints expose all users' information to any authenticated user (IDOR)

medium Affects grumpydictator/firefly-iii. Feed 2026.10.29.4, updated 2026-10-29; published 2026-03-07.

Firefly III user API endpoints expose all users' information to any authenticated user (IDOR)

Package: grumpydictator/firefly-iii Composer
Affected versions: >=6.4.23 and <6.5.1
Fixed in: 6.5.1
Severity: medium
Exploitation: not on CISA KEV
Published: 2026-03-07
Source: osv.dev

References

NVD record grumpydictator/firefly-iii advisories

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Related advisories

CVE-2021-3846 high Unrestricted File Upload vulnerability in Firefly III same package: grumpydictator/firefly-iii
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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