How severe is CVE-2026-30579?

CVE-2026-30579 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-30579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30579?

CVE-2026-30579 affects Leefish File Thingie. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30579?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-30579 have an EU (EUVD) identifier?

Yes. CVE-2026-30579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13734.

When was CVE-2026-30579 published?

CVE-2026-30579 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-30579

CVE-2026-30579 is a medium-severity vulnerability in Leefish File Thingie with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13734
Weakness: CWE-79
Affected product: Leefish File Thingie
Published: 2026-03-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-30579?: CVE-2026-30579 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-30579 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30579?: CVE-2026-30579 affects Leefish File Thingie. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30579?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30579 have an EU (EUVD) identifier?: Yes. CVE-2026-30579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13734.
When was CVE-2026-30579 published?: CVE-2026-30579 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:leefish:file_thingie:2.5.7:*:*:*:*:*:*:*

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