What is CVE-2026-30579?

CVE-2026-30579 is a medium-severity vulnerability in Leefish File Thingie, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2026-03-20.

How severe is CVE-2026-30579?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Leefish File Thingie

CVE-2026-30579

File Thingie 2.5.7 is vulnerable to Cross Site Scripting (XSS). A malicious user can leverage the "upload file" functionality to upload a file with a crafted file name used to trigger a Javascript payload.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (8.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L.

Affected products

Leefish File_thingie — versions 2.5.7
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-30579?: CVE-2026-30579 is a medium-severity vulnerability in Leefish File Thingie, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2026-03-20.
How severe is CVE-2026-30579?: Medium severity. CVSS v3 base score is 6.5 out of 10.