CVE-2026-110767 in Gitingest
Summary
by MITRE • 10/14/2026
Gitingest through 0.3.1 contains a symlink following vulnerability in ingest_query single-file blob ingestion that allows unauthenticated attackers to read server files by submitting symlink blob URLs. Attackers can commit a symlink to a public repository and submit its blob URL, causing the server to return any file the service user can read, up to 10 MB.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified in Gitingest versions through 0.3.1 represents a critical path traversal issue rooted in improper handling of symbolic links during single-file blob ingestion processes. This flaw allows unauthenticated attackers to bypass intended access controls and read arbitrary files from the server's file system, provided those files are accessible by the user account executing the service. The core technical failure lies in the application's inability to distinguish between legitimate repository content and maliciously crafted symbolic link targets when processing blob URLs submitted via ingest queries. By leveraging this weakness, an attacker can exploit the underlying operating system behavior regarding symlink resolution, effectively tricking the server into reading sensitive data outside of the intended repository scope.
The operational mechanism of this attack is straightforward yet potent. An adversary begins by creating a public Git repository containing a symbolic link that points to a target file on the local file system where Gitingest is deployed. This could be any readable file, such as configuration files with database credentials, environment variables, or other sensitive data accessible to the service user. The attacker then submits the blob URL corresponding to this symlinked entry through the ingest_query endpoint. Instead of rejecting the request due to its symbolic nature or resolving it safely within the repository context, Gitingest follows the link and returns the contents of the target file to the requester. This behavior effectively transforms a code hosting tool into an arbitrary file read vector, exposing internal infrastructure details that should remain confidential.
The impact of this vulnerability is significant for organizations relying on Gitingest for analyzing or processing Git repositories in untrusted environments. Since the attack requires no authentication, it can be executed by any internet user who discovers the vulnerable instance. The ability to read up to 10 MB of data per request allows attackers to exfiltrate substantial amounts of sensitive information, potentially leading to further compromise such as credential theft or deeper network penetration if critical configuration files are exposed. This aligns with CWE-59 Improper Link Resolution Before File Access, a classic weakness where software does not sufficiently verify that symbolic links point to expected locations before performing operations on them. Furthermore, this exploitation technique maps directly to the MITRE ATT&CK framework's T1083 Data from Local System and potentially T1046 Network Service Discovery if used for reconnaissance, highlighting its relevance in broader attack scenarios involving server-side request forgery or local file inclusion patterns.
Mitigation strategies must focus on strict input validation and secure file handling practices within the ingestion logic. Developers should implement checks to ensure that resolved paths remain strictly within the expected repository directory structure, preventing any traversal outside of designated boundaries using canonical path verification techniques such as realpath comparisons before allowing read operations. Additionally, configuring the service user with minimal permissions can limit the blast radius by restricting access only to necessary files rather than granting broad read privileges across the entire file system. Upgrading to a patched version that addresses this symlink handling flaw is essential for immediate remediation. Until then, deploying web application firewalls or custom middleware rules to block requests containing suspicious blob patterns associated with symbolic links can provide temporary protection against exploitation attempts targeting this specific vulnerability vector.