CVE & CISA-KEV Catalog

CVE-2024-0391

MEDIUM
5.3
CVSS v3
NVD

Description

The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts. The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.

CWE-204

How to fix

Remediation Available
identity serverNVD
Affected:>= 7.0.0, < 7.0.0.131Fixed in:7.0.0.131CVE-2024-0391derived from NVD
identity server as key managerNVD
Affected:>= 5.10.0, < 5.10.267Fixed in:5.10.267CVE-2024-0391derived from NVD
open banking iamNVD
Affected:>= 2.0.0, < 2.0.0.318Fixed in:2.0.0.318CVE-2024-0391derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

0.18%probability of exploitation in 30 days
8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Vendor Advisory1
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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-27.