What’s Vulnerable › Vulnerabilities
CVE-2024-8122: Potential brute force vulnerability due to non-expiring SMS OTPs
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-08 · updated 2026-10-08
- Weakness: CWE-613
Description
The WSO2 Identity Server fails to enforce a default expiry time for SMS One-Time Passwords (OTPs) used in multi-factor authentication (MFA). This allows unused OTPs to remain valid indefinitely, presenting an opportunity for malicious actors to conduct brute force attacks by repeatedly guessing the OTP. The absence of automatic expiration for OTPs grants attackers an unlimited timeframe to attempt guessing the correct code. A successful brute force attack can lead to an MFA bypass, resulting in the unauthorized takeover of a user's account and compromising the security and privacy of both the individual and the system.
Affected products
- WSO2 Identity Server: from 5.11.0 before 5.11.0.372; from 6.0.0 before 6.0.0.227; from 6.1.0 before 6.1.0.219 — fixed in 5.11.0.372, 6.0.0.227, 6.1.0.219
How to fix
Upgrade to a fixed version: WSO2 Identity Server 5.11.0.372, 6.0.0.227, 6.1.0.219. Check the vendor advisory for mitigations.
References
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