CVE-2025-27098 is a medium-severity vulnerability affecting The Guild's GraphQL Mesh, a framework that facilitates GraphQL Federation and serves static files. This vulnerability allows unauthorized access to files on the server's file system due to a missing check in the static file handler. The static file handler fails to verify that the absolute path is within the designated static files directory when the `staticFiles` option is enabled in the configuration.
The CVSS score of 5.8 indicates that while the vulnerability can be exploited, it requires high attack complexity and user interaction. Risk to organizations includes potential exposure of sensitive files, which could lead to data leakage. Organizations using affected versions of GraphQL Mesh should prioritize patching or reconfiguring their systems.
To mitigate this vulnerability, users have two options: upgrade `@graphql-mesh/cli` to version 0.82.21 or higher and `@graphql-mesh/http` to version 0.3.19 or higher, or remove the `staticFiles` option from their configuration entirely. Organizations should take immediate action to prevent unauthorized access to their file systems.
The vulnerability was published on February 20, 2025, and has been classified by the NVD with a CVSS score of 7.5, representing a higher threat level. Given the evolving threat landscape, organizations must keep their systems updated and configurations secure.
Organizations should prioritize patching immediately.
Vulnerability Details
CVE-2025-27098 is categorized as a missing check vulnerability in the static file handler of GraphQL Mesh. This vulnerability occurs when clients can access files on the server's file system without proper validation. The affected products are `graphql_mesh_cli` and `graphql_mesh_http`, specifically versions between 0.78.0 and 0.82.21 for the CLI and versions lower than 0.3.19 for HTTP.
The vulnerability has a CVSS score of 5.8 based on the following metrics: Attack Vector: Network, Attack Complexity: High, Privileges Required: None, User Interaction: Required, Confidentiality Impact: Low, Integrity Impact: Low, Availability Impact: Low.
The publication date of the vulnerability was February 20, 2025. It is classified under CWE-22, indicating a potential for improper limitation of a pathname to a restricted directory ('Path Traversal').
Technical Analysis
The root cause of this vulnerability is the lack of a validation check in the static file handler of GraphQL Mesh. When the `staticFiles` option is configured, the handler does not ensure that the requested absolute path remains within the defined static files directory, which can lead to unauthorized access to arbitrary files on the server.
The attack vector for this vulnerability is remote, as it can be exploited over the network. Given the high attack complexity, an attacker would require user interaction to exploit this vulnerability, which could be in the form of tricking a user into accessing a malicious link that triggers the vulnerability. The attack does not require elevated privileges, as it can be executed without authentication.
In terms of impacts, this vulnerability has low confidentiality, integrity, and availability impacts, as it primarily pertains to unauthorized file access rather than compromising the entire system.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2025-27098 stems from the potential for unauthorized access to sensitive files. If exploited, this could lead to the exposure of private information or critical system files that attackers could leverage for further attacks. The blast radius could be significant, affecting any organization utilizing the vulnerable versions of GraphQL Mesh.
Organizations must understand that even medium-severity vulnerabilities can lead to severe consequences, especially if sensitive data is accessed. The urgency for patching is underscored by the CVSS score and the fact that the vulnerability is already known to the public.
Given the low EPSS score of 0.00134, indicating a relatively low probability of exploitation, organizations should not become complacent. Instead, they should adopt a proactive approach to vulnerability management and ensure that their systems are updated regularly.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions for this vulnerability include `graphql_mesh_cli` versions 0.78.0 to 0.82.21 and `graphql_mesh_http` versions lower than 0.3.19. Organizations utilizing these versions should take steps to remediate the vulnerability.
Mitigation & Remediation
To mitigate the risks associated with CVE-2025-27098, organizations should update `@graphql-mesh/cli` to a version higher than 0.82.21 and update `@graphql-mesh/http` to a version higher than 0.3.18. Alternatively, organizations can remove the `staticFiles` option from their configuration, which will eliminate the risk of unauthorized file access.
Finally, organizations should not overlook the potential impact of emerging threats and should keep abreast of the latest security trends. Engaging with industry resources, such as the State of Application Security report, can provide valuable insights into current vulnerabilities and mitigation strategies.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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