GHSA-6jq6-x4cx-qvcm: grumpydictator/firefly-iii

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

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 12 Jun 2026, 15:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
grumpydictator/firefly-iii	Packagist	<6.6.3	6.6.3

Identifiers

GHSA-6jq6-x4cx-qvcm · PKSA-197r-m2ry-57db

Weakness (CWE)

CWE-79 · CWE-116

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Firefly II versions before 6.6.3 have a stored cross-site scripting flaw in the audit log entry view, where piggy bank names are displayed without escaping. An authenticated user who names a piggy bank with crafted content could run script in the browser of anyone who views the related transaction's audit log. Upgrade to Firefly II 6.6.3 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
Not published	None	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 13:58 UTC First seen by agentprime
31 Oct 2026, 13:58 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.