PYSEC-2026-3466 Flask-Reuploaded: Extension-denylist bypass via case-folding asymmetry in name-override path (incomplete-fix variant of CVE-2026-27641)

Header | Field | Value | |---|---| | Title | Extension-denylist bypass via case-folding asymmetry in name-override path incomplete-fix variant of CVE-2026-27641 | | Project | Flask-Reuploaded flaskuploads | | Affected | extension"shell.php" = "php" - extensionallowed"php" - DENY correct...

Exploit for Path Traversal in Jugmac00 Flask-Reuploaded

CVE-2026-27641 is a critical security vulnerability affecting ve...

CVE-2026-54567

creationtimestamp| type| source ---|---|--- 2026-07-17 22:35:08+00:00| published-proof-of-concept| https://github.com/jugmac00/flask-reuploaded/security/advisories/GHSA-937x-gpqr-72gg...

GHSA-937X-GPQR-72GG Flask-Reuploaded: Extension-denylist bypass via case-folding asymmetry in name-override path (incomplete-fix variant of CVE-2026-27641)

Header | Field | Value | |---|---| | Title | Extension-denylist bypass via case-folding asymmetry in name-override path incomplete-fix variant of CVE-2026-27641 | | Project | Flask-Reuploaded flaskuploads | | Affected | extension"shell.php" = "php" - extensionallowed"php" - DENY correct...

Flask-Reuploaded: Extension-denylist bypass via case-folding asymmetry in name-override path (incomplete-fix variant of CVE-2026-27641)

Header | Field | Value | |---|---| | Title | Extension-denylist bypass via case-folding asymmetry in name-override path incomplete-fix variant of CVE-2026-27641 | | Project | Flask-Reuploaded flaskuploads | | Affected | extension"shell.php" = "php" - extensionallowed"php" - DENY correct...

PT-2026-60901

Name of the Vulnerable Software and Affected Versions Flask-Reuploaded versions prior to 1.5.1 Description An issue exists in the UploadSet.save function where the name parameter can be used to bypass extension denylists. When a user provides a name override, the system performs re-validation usi...

PYSEC-2026-341 Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

Impact A critical path traversal and extension bypass vulnerability in Flask-Reuploaded allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection SSTI. Patches Flask-Reuploaded has been patched in version 1.5.0 Workarounds 1. Do not...

Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

ImpactA critical path traversal and extension bypass vulnerability in Flask-Reuploaded allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection SSTI. Patches Flask-Reuploaded has been patched in version 1.5.0 Workarounds1. Do not pas...

PT-2026-53432

Impact A critical path traversal and extension bypass vulnerability in Flask-Reuploaded allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection SSTI. Patches Flask-Reuploaded has been patched in version 1.5.0 Workarounds 1. Do not...

Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection (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 Template Injection SSTI. Flask-Reuploaded has been patche...

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 Template Injection SSTI. Flask-Reuploaded has been patche...

Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

Impact A critical path traversal and extension bypass vulnerability in Flask-Reuploaded allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection SSTI. Patches Flask-Reuploaded has been patched in version 1.5.0 Workarounds 1. Do not...

EUVD-2026-8616

Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection...

GHSA-65MP-FQ8V-56JR Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

Impact A critical path traversal and extension bypass vulnerability in Flask-Reuploaded allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection SSTI. Patches Flask-Reuploaded has been patched in version 1.5.0 Workarounds 1. Do not...

Improper Neutralization of Special Elements Used in a Template Engine

Overview Flask-Reuploaded is a Flexible and efficient upload handling for Flask Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via the name parameter. An attacker can write arbitrary files and execute code on the server by...

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 Template Injection SSTI. Flask-Reuploaded has been patche...

CVE-2026-27641 Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

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 Template Injection SSTI. Flask-Reuploaded has been patche...

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 Template Injection SSTI. Flask-Reuploaded has been patche...

CVE-2026-27641

CVE-2026-27641 affects the Flask-Reuploaded package used with Flask. The vulnerability is a critical path traversal and extension bypass in versions prior to 1.5.0, enabling remote attackers to perform arbitrary file writes and remote code execution via Server-Side Template Injection (SSTI). The ...

CVE-2026-27641 Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection

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 Template Injection SSTI. Flask-Reuploaded has been patche...