CVE-2025-27097 is a medium-severity vulnerability affecting The Guild's GraphQL Mesh, which is a framework and gateway that facilitates GraphQL Federation and supports various non-GraphQL services, including REST and gRPC. This vulnerability allows token variables to be improperly cached, leading to potential memory leaks. Specifically, when a user executes transformations at the root level or on a single source, the initial variables sent by the client are reused in subsequent requests until the cache evicts the DocumentNode. As a result, even if different tokens are sent in later requests, the cache may treat them as the same token, causing unintended memory retention.
The CVSS score for this vulnerability is 5.1, indicating a medium level of risk. Organizations using GraphQL Mesh should be aware of this issue as it can lead to low integrity and availability impacts. The vulnerability was published on February 20, 2025, and has been analyzed for its potential effects on deployment.
Organizations should prioritize remediation efforts to mitigate any risks associated with this vulnerability. Although the exploitability is considered medium and there are no known public exploits at this time, it is essential for defenders to stay vigilant and address vulnerabilities proactively.
The risk to organizations includes potential memory leaks that could affect application performance and stability. Given the potential for low integrity and availability impact, organizations should consider this vulnerability in their risk assessments and remediation plans.
Organizations should address this vulnerability in their priority patch cycle to prevent any potential exploitation and ensure the integrity of their applications.
Understanding the underlying mechanisms of GraphQL Mesh and its operation is crucial for effective remediation and risk management.
Vulnerability Details
The vulnerability in GraphQL Mesh allows for improper caching of token variables, which can lead to unintended memory retention. The affected versions include 0.96.5 through 0.96.8. The CVE was last modified on February 27, 2025.
Technical Analysis
The root cause of this vulnerability lies in the caching mechanism of GraphQL Mesh. When transformations are applied at the root level, the initial variables are retained and reused for subsequent requests, leading to potential memory leaks. The attack vector is network-based, requiring a low level of complexity and low privileges, with passive user interaction.
Risk & Impact Analysis
Organizations using GraphQL Mesh should recognize the real-world risks associated with this vulnerability. The potential for memory leaks can affect application performance and lead to increased costs associated with remediation. Given the medium CVSS score, organizations should address this vulnerability in their patch cycle. The impact on availability and integrity is relatively low, but the risk of degraded application performance is a concern.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of GraphQL Mesh are 0.96.5, 0.96.6, 0.96.7, and 0.96.8. Organizations should ensure they are using a patched version to mitigate this vulnerability.
Mitigation & Remediation
To mitigate CVE-2025-27097, organizations should upgrade to the latest version of GraphQL Mesh where this issue has been addressed. If a patch is not available, consider implementing configuration hardening measures and monitoring system behavior for any anomalies.
Detection Guidance
Organizations should monitor logs for unusual memory consumption patterns that may indicate the presence of this vulnerability being exploited. Behavioral anomalies in the application that correlate with token handling should be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-27097 lies in its potential to affect applications utilizing GraphQL Mesh significantly. Security teams should take note of the caching mechanisms within their applications and ensure they are robust against such vulnerabilities. The patterns of improper token handling represent a critical area for future security audits and assessments.
Organizations should be vigilant in implementing robust logging and monitoring strategies as part of their security posture. For further insights on security testing methodologies, teams may explore our detailed resources on penetration testing methodology and vulnerability management programs to enhance their defenses against 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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