GHSA-6jq6-x4cx-qvcm: Firefly II has Stored XSS in Audit Log Entry view via piggy bank name (ale.twig)

medium Affects grumpydictator/firefly-iii. Feed 2026.10.29.4, updated 2026-10-29; published 2026-06-12; advisory modified 2026-09-10.

Firefly II has Stored XSS in Audit Log Entry view via piggy bank name (ale.twig)

Package: grumpydictator/firefly-iii Composer
Affected versions: <6.6.3
Fixed in: 6.6.3
Severity: medium
Exploitation: not on CISA KEV
Published: 2026-06-12
Source: osv.dev

References

CWE-116 CWE-79

NVD record grumpydictator/firefly-iii advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2021-3846 high Unrestricted File Upload vulnerability in Firefly III same package: grumpydictator/firefly-iii
CVE-2019-13644 medium Firefly III vulnerable to stored XSS same package: grumpydictator/firefly-iii
CVE-2019-13645 medium Firefly III vulnerable to stored XSS same package: grumpydictator/firefly-iii
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