CVE Tools
Sign in

CVE-2023-49438

Published: Dec 26, 2023Updated: Nov 4, 2025 Sources: CVE List NVD GHSA BDUCWE-601
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
1.1%
Top 39.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

An open redirect vulnerability in the python package Flask-Security-Too <=5.3.2 allows attackers to redirect unsuspecting users to malicious sites via a crafted URL by abusing the ?next parameter on the /login and /register routes.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-601

Affected Products

n/an/a
flask-security-tooflask-security-too project
Library
OSS Libraries / web-framework
Flask-Security-TooPyPIOSS Libraries
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Flask-Security-TooMatt Wright
On-prem
Web & CMS Plugins / cms-core
flask-security-too projectoss-projectOSS Librariesaka flask-security-too
pypipackage-ecosystemOSS Libraries
ооо «ред софт»commercialRUOperating Systemsaka red soft
matt wrightindividual-devWeb & CMS Pluginsaka formmail, wwwboard, matt wright guestbook

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/Flask-Middleware/flask-security
github.com
https://github.com/brandon-t-elliott/CVE-2023-49438
github.com
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM/
lists.fedoraproject.org
and 8 more references View all →

Timeline

Published
Dec 26, 2023
Last Updated
Nov 4, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2023-49438 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows