CVE-2026-88069 in Pandora
Summary
by MITRE • 09/09/2026
Pandora contains a path traversal vulnerability in its archive extraction worker. When processing a specially crafted archive or disk image, attacker-controlled file paths could be used without ensuring that the resulting destination remained within the intended extraction directory.
An attacker able to submit a malicious file for analysis could use path traversal sequences or crafted paths to cause extracted content to be written outside the designated extraction directory, potentially overwriting files accessible to the Pandora worker process. Successful exploitation could result in unauthorized modification of application or system files, denial of service, and potentially further compromise depending on the permissions of the Pandora process and the files that can be overwritten.
The vulnerability is addressed by resolving each extraction destination path before writing and verifying that it remains below the expected extraction directory. Extraction attempts resolving outside this directory are rejected and reported as path traversal attempts.
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Analysis
by VulDB Data Team • 09/10/2026
Pandora, a widely utilized platform for malware analysis and threat intelligence gathering, contains a critical security flaw within its archive extraction worker component. This vulnerability stems from an insufficient validation of file paths during the process of unpacking compressed archives or disk images submitted by users for inspection. The core technical deficiency lies in the application's failure to canonicalize or normalize the destination path before writing extracted files to the filesystem. When processing a specially crafted archive, an attacker can embed entries with absolute paths or relative path sequences containing directory traversal characters such as dot-dot-slash (../). Because the extraction logic does not rigorously verify that these resolved paths remain strictly within the designated sandboxed extraction directory, the application permits writes outside of this controlled environment. This behavior aligns directly with CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which describes vulnerabilities where software allows access to files or resources located in unintended directories due to inadequate path validation mechanisms.
The operational impact of this vulnerability is severe and multifaceted. An attacker who successfully submits a malicious file for analysis can leverage the path traversal flaw to overwrite arbitrary files accessible to the Pandora worker process account. Depending on the specific deployment configuration and privilege level assigned to the service, this could lead to unauthorized modification of critical application configuration files, system binaries, or other sensitive data stored within reach of the extraction directory's parent hierarchy. In scenarios where the service runs with elevated privileges, such as root or SYSTEM access, an attacker might achieve full remote code execution by overwriting executable libraries or scripts that are subsequently loaded by privileged processes. Even in less severe configurations, the ability to overwrite files can result in a denial of service condition by corrupting essential application data or disrupting normal operational workflows. Furthermore, this vulnerability serves as a potential foothold for further compromise, allowing attackers to plant backdoors, modify logging mechanisms to evade detection, or escalate privileges within the host environment.
To mitigate this risk, Pandora has implemented a robust fix that addresses the root cause of the path traversal issue. The updated extraction logic now resolves each destination file path using canonicalization techniques before any write operation is attempted. This process ensures that symbolic links and relative paths are fully expanded into their absolute forms on the filesystem. Following resolution, the system performs a strict verification step to confirm that the resulting absolute path remains within the boundaries of the expected extraction directory. Any attempt to extract files where the resolved destination falls outside this permitted scope is immediately rejected by the application. These blocked attempts are also logged and reported as potential path traversal attacks, providing security teams with visibility into exploitation attempts. This defense-in-depth approach not only prevents unauthorized file writes but also enhances monitoring capabilities for detecting adversarial behavior consistent with ATT&CK technique T1083: File and Directory Discovery or T1564: Hide Artifacts, by ensuring that the sandbox remains isolated from the broader host filesystem. Organizations utilizing this platform should ensure they have applied the latest patches to eliminate exposure to this vulnerability and maintain strict isolation between user-submitted artifacts and system-critical resources.