CVE-2024-1524
Published: 24 February 2026
Summary
CVE-2024-1524 is a high-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Wso2 Identity Server. Its CVSS base score is 7.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Account Manipulation (T1098); ranked at the 17.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-2 (Account Management) and IA-13 (Identity Providers and Authorization Servers).
Deeper analysis
CVE-2024-1524 affects deployments using the "Silent Just-In-Time Provisioning" feature enabled for a federated identity provider (IDP), as detailed in WSO2 security advisories. The vulnerability arises during the account provisioning process, where a local user store's user information may be replaced if federated users share the same username as existing local users. There is no impact unless an IDP is configured for federated authentication with Silent JIT provisioning specifically enabled.
A malicious actor can exploit this vulnerability if they possess a fresh valid user account in the federated IDP that has not been used earlier, knowledge of a valid local IDP username, and control of a federated IDP account matching that targeted local username. Successful exploitation allows the actor to associate the targeted local user account with their controlled federated IDP account, replacing local user information. The CVSS score of 7.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L) reflects high confidentiality and integrity impacts with low availability impact, mapped to CWE-290.
The WSO2 security advisory provides details on mitigations at https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3144/.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-17272
Vulnerability details
When the "Silent Just-In-Time Provisioning" feature is enabled for a federated identity provider (IDP) there is a risk that a local user store user's information may be replaced during the account provisioning process in cases where federated users share the…
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same username as local users. There will be no impact on your deployment if any of the preconditions mentioned below are not met. Only when all the preconditions mentioned below are fulfilled could a malicious actor associate a targeted local user account with a federated IDP user account that they control. The Deployment should have: -An IDP configured for federated authentication with Silent JIT provisioning enabled. The malicious actor should have: -A fresh valid user account in the federated IDP that has not been used earlier. -Knowledge of the username of a valid user in the local IDP. -An account at the federated IDP matching the targeted local username.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability enables account manipulation via silent JIT provisioning to hijack/overwrite local accounts with attacker-controlled federated ones, facilitating use of valid accounts.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
AC-2 Account Management establishes procedures for account provisioning that prevent unauthorized replacement of local user information by federated accounts sharing usernames.
IA-4 Identifier Management ensures unique usernames across local and federated stores, directly mitigating collision-based account overwrites.
IA-13 Identity Providers and Authorization Servers enforces requirements on federated IDPs to avoid risks like Silent JIT provisioning overwriting local accounts.