CVE-2026-65431 in GeoIP Extension Plugin
Summary
by MITRE • 07/23/2026
Geo IP database update archives have been broadly extracted without path validation, leading to unsafe file extractions.
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Analysis
by VulDB Data Team • 07/23/2026
This vulnerability represents a classic path traversal attack vector that exploits insecure file extraction practices in geolocation database update systems. The flaw occurs when applications process compressed archive files containing geographic information data without validating the file paths within the archive structure. Attackers can craft malicious archive files containing entries with directory traversal sequences such as ../ or ..\ that would allow them to write files outside of the intended target directory during extraction operations. This vulnerability falls under the CWE-22 category for Improper Limitation of a Pathname to a Restricted Directory and aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter. The security impact extends beyond simple file overwrites to potential privilege escalation scenarios where attackers might target system configuration files or binaries within the application's installation directory. When combined with other vulnerabilities, this weakness can enable complete system compromise through techniques such as deploying malicious executables in system directories or modifying critical configuration files that control application behavior.
The technical implementation of this vulnerability typically involves applications using standard archive extraction libraries without implementing proper path validation checks before decompressing content. Common affected systems include web applications that automatically update geolocation databases, network monitoring tools, security appliances, and any software that downloads and processes third-party geographic data archives. The extraction process often occurs in temporary directories or designated update locations where the application expects to find specific database files. Attackers exploit this by creating specially crafted archive files containing entries with absolute paths or relative path references that bypass normal directory restrictions during decompression operations. This creates a scenario where legitimate update processes become attack vectors for arbitrary file system modifications.
Operational impact of this vulnerability can be severe across multiple threat scenarios including persistent backdoor installation, privilege escalation attacks, and denial of service conditions. An attacker who successfully exploits this weakness could gain the ability to modify critical application components, install malicious software in system directories, or overwrite configuration files that control network behavior. The vulnerability is particularly dangerous when combined with other attack vectors such as command injection in update processes, as it provides a mechanism for attackers to establish persistence within the target environment. Organizations using geolocation services, network security monitoring systems, and applications that automatically download external database updates face significant risk from this type of vulnerability. The impact extends to compliance requirements where unauthorized file modifications may violate data integrity standards and regulatory frameworks such as soc 2, iso 27001, and pci dss.
Mitigation strategies should focus on implementing strict path validation during archive extraction operations and following secure coding practices for file handling. Applications must validate all file paths within archive contents against expected directories before extraction, rejecting any entries containing traversal sequences or absolute paths. This involves implementing proper input sanitization using techniques such as canonicalizing file paths, maintaining allowlists of acceptable directory structures, and employing secure library functions that prevent path traversal during decompression operations. Organizations should also implement principle of least privilege for applications handling archive updates, ensuring they operate with minimal required permissions and restricted write access to system directories. Additionally, regular security testing including penetration testing and code review processes should specifically target file extraction routines to identify and remediate similar vulnerabilities before exploitation occurs. The implementation of automated monitoring for unauthorized file modifications in critical directories can provide early detection capabilities for potential exploitation attempts.