What’s Vulnerable › Vulnerabilities

CVE-2023-49438

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-12-26 · updated 2026-06-17
• Weakness: CWE-601

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.

Affected products

• Flask-Middleware flask-security-too: through 5.3.2

References

• https://github.com/Flask-Middleware/flask-security
• https://github.com/brandon-t-elliott/CVE-2023-49438
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM/
• https://github.com/Flask-Middleware/flask-security
• https://github.com/brandon-t-elliott/CVE-2023-49438
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM/

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