This vulnerability allows an unauthenticated attacker to execute arbitrary SQL during authentication via a malicious search_path parameter in the StartupMessage. The flaw exists in the auth_query connection handler of PgBouncer versions prior to 1.25.1.
With a CVSS score of 7.5, this high-severity vulnerability poses a significant threat to organizations utilizing PgBouncer. The potential for exploitation exists, as attackers may leverage this vulnerability to gain unauthorized access to sensitive data or execute malicious commands.
Organizations should prioritize patching immediately. The vulnerability is classified under CWE-426, indicating a reliance on untrusted search paths, which can have grave implications for overall system security.
The urgency for defenders is heightened due to the nature of the vulnerability and the attack vector being network-based. Although there are currently no known exploits in the wild, the potential for exploitation remains a credible threat.
Vulnerability Details
The vulnerability is detailed in the official description: 'Untrusted search path in auth_query connection handler in PgBouncer before 1.25.1 allows an unauthenticated attacker to execute arbitrary SQL during authentication via a malicious search_path parameter in the StartupMessage.'
It has a CVSS score of 7.5, reflecting a high severity level due to its potential impact on confidentiality, integrity, and availability. The affected product is PgBouncer, and the vendor is PgBouncer. The vulnerability was published on December 3, 2025.
Technical Analysis
The root cause of this vulnerability is the untrusted search path, which allows attackers to manipulate the connection handler during authentication. The attack vector is network-based, requiring minimal privileges, and does not necessitate user interaction.
The attack complexity is considered high, indicating that successful exploitation may require specific conditions. However, the potential impacts are severe, with high confidentiality, integrity, and availability impacts.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive data and potential system compromise. The blast radius is significant, as the exploitation of this vulnerability could lead to widespread data breaches.
Organizations should assess their exposure and prioritize mitigation strategies based on the CVSS score and potential impact. Given the nature of the vulnerability, it is crucial to implement remediation measures promptly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of PgBouncer prior to 1.25.1 are affected by this vulnerability. Organizations should verify their versions and apply necessary patches to mitigate the risk.
Mitigation & Remediation
To address this vulnerability, organizations should immediately upgrade to PgBouncer version 1.25.1 or later. If immediate patching is not feasible, consider implementing network controls to restrict access to the PgBouncer service.
Organizations may also benefit from conducting a security assessment to identify potential weaknesses within their systems. Regular security testing, such as penetration testing, can help ensure the security of the environment.
Detection Guidance
Organizations should monitor logs for unusual authentication attempts and SQL execution patterns. Behavioral anomalies during authentication processes may indicate exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-12819 lies in its demonstration of how vulnerabilities in authentication mechanisms can lead to severe security breaches. This vulnerability exemplifies a trend where attackers exploit misconfigurations in search paths to gain unauthorized access.
Security teams should take this as a lesson to regularly review and harden their authentication processes. For further guidance on securing authentication, organizations can refer to resources on penetration testing methodology and implement robust security practices.
The ongoing evolution of security threats necessitates that organizations remain vigilant and proactive in their security posture. Engaging in regular assessments and leveraging threat intelligence can significantly bolster defenses against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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