CVE-2025-71176 identifies a medium-severity vulnerability in pytest, specifically affecting versions up to 9.0.2 on UNIX systems. This vulnerability allows local users to exploit the system by taking advantage of the directory naming convention used by pytest, leading to a denial of service or potential privilege escalation.
The CVSS score of 6.8 indicates that this vulnerability poses a moderate threat to organizations utilizing pytest in their software development lifecycle. Local attackers may leverage this issue to disrupt services or potentially escalate their privileges, which can lead to further exploitation.
Given the nature of the attack vector, which is local, the risk is primarily confined to environments where users have local access. However, the potential impact on services and privilege escalation should not be overlooked. Organizations using pytest should take immediate inventory of their usage to assess exposure.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Proper remediation steps should be taken to ensure that local users cannot exploit this vulnerability.
Vulnerability Details
The vulnerability stems from pytest's reliance on directories with the /tmp/pytest-of-{user} naming pattern, which is susceptible to local user manipulation. This can lead to a denial of service or possibly privilege escalation, classified under CWE-379.
The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L, which highlights the local attack vector and the low complexity of the attack. The privilege required is none, and no user interaction is needed.
This vulnerability was published on January 22, 2026, and is currently classified as awaiting analysis. Organizations should actively monitor for updates regarding this vulnerability.
Technical Analysis
The root cause of this vulnerability is the inadequate handling of temporary directories by pytest, which allows local users to interfere with pytest's operation. The attack vector is local, meaning that an attacker must have access to the physical or virtual machine to exploit the vulnerability.
The attack complexity is low, as it does not require any special skills or knowledge beyond local access to the system. No privileges are required to exploit this vulnerability, and user interaction is not necessary, making it straightforward for local users to exploit.
The confidentiality, integrity, and availability impacts are all classified as low, indicating that while the risks are present, they may not lead to severe consequences without further exploitation.
Risk & Impact Analysis
The potential risks to organizations include service disruptions and unauthorized privilege escalation. Given the local attack vector, the risk primarily affects systems where users have local access, but this can cause significant operational impact if exploited.
Organizations should consider factors such as the number of users with local access, the criticality of the systems affected, and the potential for further exploitation as part of their risk assessment.
The urgency for remediation is classified as medium, suggesting that organizations should address this vulnerability in their patch cycle but may not require immediate action unless under specific threat conditions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of pytest prior to 9.0.3 are affected by this vulnerability. Organizations using older versions should plan to upgrade to the latest version to mitigate risk.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to pytest version 9.0.3 or later. If an immediate upgrade is not possible, consider implementing strict access controls for local users to limit their ability to manipulate temporary directories.
Organizations should also review their system configurations and ensure proper hardening of UNIX systems to minimize exposure to similar vulnerabilities.
For further guidance on implementing effective remediation strategies, organizations may consider engaging in penetration testing to validate security measures.
Detection Guidance
Organizations should monitor for any unusual activities within their UNIX systems, particularly in the /tmp/ directory. Log indicators that may suggest exploitation attempts include unexpected changes to the pytest temporary directories.
Behavioral anomalies such as unexpected service disruptions or privilege changes should also be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-71176 lies in the broader context of vulnerabilities related to temporary directory management in software applications. This incident underscores the importance of secure coding practices and the need for robust security measures in development.
Security teams should be vigilant about similar patterns in their applications, reviewing how temporary files and directories are managed. This vulnerability serves as a reminder to implement comprehensive security testing during the development lifecycle.
For additional insights into managing vulnerabilities effectively, organizations can explore best practices in our vulnerability management program to enhance their security posture.
Additionally, enhancing knowledge on penetration testing methodologies through our penetration testing methodology guide can provide teams with effective strategies to identify and mitigate 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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