Path Traversal in Jugmac00 Flask-reuploaded

CVE-2026-27641

Flask-Reuploaded provides file uploads for Flask. A critical path traversal and extension bypass vulnerability in versions prior to 1.5.0 allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side…

EPSS: 0.010 (59.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-27641?
CVE-2026-27641 is a critical-severity vulnerability in Jugmac00 Flask-reuploaded, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 9.8/10. Published 2026-02-25.
How severe is CVE-2026-27641?
Critical severity. CVSS v3 base score is 9.8 out of 10.