Arbitrary file upload in Templatespare

CVE-2026-57658

Administrator Arbitrary File Upload in TemplateSpare <= 4.2.0 versions.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-57658: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57658?
CVE-2026-57658 is a critical-severity vulnerability in Templatespare, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2026-06-26.
How severe is CVE-2026-57658?
Critical severity. CVSS v3 base score is 9.1 out of 10.