CVE-2019-13645

Severity: medium (CVSS 5.4 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-07-18 · updated 2026-06-17
Weakness: CWE-79

Description

Firefly III before 4.7.17.3 is vulnerable to stored XSS due to lack of filtration of user-supplied data in image file names. The JavaScript code is executed during attachments/edit/$file_id$ attachment editing. NOTE: It is asserted that an attacker must have the same access rights as the user in order to be able to execute the vulnerability

Affected products

firefly-iii/firefly-iii: before 4.7.17.3 — fixed in 4.7.17.3

How to fix

Upgrade to a fixed version: firefly-iii/firefly-iii 4.7.17.3. Check the vendor advisory for mitigations.

References

https://github.com/firefly-iii/firefly-iii/compare/a70b7cc...7d482aa
https://github.com/firefly-iii/firefly-iii/issues/2337
https://github.com/firefly-iii/firefly-iii/compare/a70b7cc...7d482aa
https://github.com/firefly-iii/firefly-iii/issues/2337

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