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NVD Vulnerability Details :
CVE-2026-27641
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-25 Feb, 2026 | 04:16
Updated At-27 Feb, 2026 | 18:40

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 patched in version 1.5.0. Some workarounds are available. Do not pass user input to the `name` parameter, use auto-generated filenames only, and implement strict input validation if `name` must be used.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
jugmac00
jugmac00
>>flask-reuploaded>>Versions before 1.5.0(exclusive)
cpe:2.3:a:jugmac00:flask-reuploaded:*:*:*:*:*:python:*:*
Weaknesses
CWE IDTypeSource
CWE-1336Primarysecurity-advisories@github.com
CWE-22Primarynvd@nist.gov
CWE ID: CWE-1336
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-22
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/jugmac00/flask-reuploaded/commit/d64c6b2f71cb73734fc38baa0e3e156926361288security-advisories@github.com
Patch
https://github.com/jugmac00/flask-reuploaded/pull/180security-advisories@github.com
Issue Tracking
Patch
https://github.com/jugmac00/flask-reuploaded/security/advisories/GHSA-65mp-fq8v-56jrsecurity-advisories@github.com
Exploit
Vendor Advisory
Hyperlink: https://github.com/jugmac00/flask-reuploaded/commit/d64c6b2f71cb73734fc38baa0e3e156926361288
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/jugmac00/flask-reuploaded/pull/180
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch
Hyperlink: https://github.com/jugmac00/flask-reuploaded/security/advisories/GHSA-65mp-fq8v-56jr
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Change History
0Changes found
Details not found