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CVE-2023-49438

29
FAUCET Score

CVE-2023-49438 is an open redirect vulnerability affecting Flask-Security-Too versions up to 5.3.2, allowing attackers to redirect users to malicious sites by manipulating the 'next' parameter on login and register routes. Rated Medium (CVSS 6.1), it requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to information disclosure and integrity impacts (C:L/I:L). There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.3.2CPE matchmatch criteria
cpe:2.3:a:flask-security-too_project:flask-security-too:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2023-49438 · Apr 21, 2026
This CVE's current EPSS score of 0.0108 is in the 74th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

pippatch availablevia ghsa
Product: Flask-Security-TooFixed in: 5.3.3
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

pipGHSA-672h-6x89-76m5medium

Open redirect vulnerability in Flask-Security-Too

Dec 27, 2023

References

lists.fedoraproject.org / archives/list/[email protected]/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM
github.com / brandon-t-elliott/CVE-2023-49438
ExploitMitigationThird Party Advisory
github.com / Flask-Middleware/flask-security
Product
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6HCYH377TPUMUHELPI36PDS2ZM4VFIXM