CVE-2024-0391

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 59/100
Published: 2026-05-11 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: Low
I: None
A: None

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
wso2 identity_server 5.10.0 – 5.10.0.379
wso2 identity_server_as_key_manager 5.10.0 – 5.10.267
wso2 open_banking_iam 2.0.0 – 2.0.0.318

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

4.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001840
Percentile 8.1%
Date 2026-11-12

EPSS Trend

2026-11-12
0.00184
2026-11-10
0.00184
2026-11-09
0.00184
2026-11-08
0.00184

Intelligence Sources

nvd ref →