CVE-2023-49438
Published: 26 December 2023
Summary
CVE-2023-49438 is a medium-severity Open Redirect (CWE-601) vulnerability in Flask-Security-Too Project Flask-Security-Too. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 5.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-49438 is an open redirect vulnerability affecting the Flask-Security-Too Python package at version 5.3.2 and earlier. The flaw resides in the handling of the next query parameter on the /login and /register routes, enabling redirection to arbitrary destinations.
An unauthenticated attacker can exploit the issue by supplying a crafted URL containing a malicious next parameter value. Successful abuse redirects a victim user who follows the link to an attacker-controlled site, which may be leveraged for phishing or further social-engineering attacks.
Public references include the upstream Flask-Security repository, a dedicated proof-of-concept repository, and a Fedora package-announce mailing-list posting; these sources constitute the primary locations for any subsequent patch or advisory information.
The associated EPSS score stands at 0.1407 with an identical recorded peak, indicating no material post-disclosure increase in observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-0079
Vulnerability details
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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.