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PYSEC-2026-1335
ethyca-fidesSummary
The Fides Admin UI login endpoint relies on a general IP-based rate limit for all API traffic and lacks specific anti-automation controls designed to protect against brute-force attacks. This could allow attackers to conduct credential testing attacks, such as credential stuffing or password spraying, which poses a risk to accounts with weak or previously compromised passwords.
Details
Fides uses a configurable, system-wide rate limit to control traffic from any single IP address. Because this single limit must be set high enough to accommodate endpoints that receive a large volume of legitimate traffic, it offers only weak protection for the login endpoint. The system is not equipped with more advanced protections tailored specifically for authentication
Impact
Although password complexity requirements and the global rate limit make a traditional brute-force attack against a single account difficult, the lack of authentication-specific protections exposes Fides to more targeted attacks. An attacker could use automated tools to test credentials obtained from data breaches or guess common passwords across multiple user accounts. If an attacker successfully compromises an account, they would gain full access to that user's privileges within the Fides Admin UI.
Patches
The vulnerability has been patched in Fides version 2.69.1. Users are advised to upgrade to this version or later to secure their systems against this threat.
Workarounds
For organizations with commercial Fides Enterprise licenses, configuring Single Sign-On (SSO) through an OIDC provider (like Azure, Google, or Okta) is an effective workaround. When OIDC SSO is enabled, username/password authentication can be disabled entirely, which eliminates this attack vector. This functionality is not available for Fides Open Source users.
Risk Level
This vulnerability has been assigned a severity of LOW.
This is fundamentally a security hardening issue. While the lack of authentication-specific rate limiting could enable credential stuffing attacks, several factors limit the risk: existing global rate limits provide baseline protection, password complexity requirements prevent trivial brute-force attacks, and successful exploitation requires attackers to already possess valid credentials from external breaches.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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