What is CVE-2025-31496?

CVE-2025-31496 is a high-severity allocation of resources without limits or throttling vulnerability in apollo-compiler (rust), affecting versions < 1.27.0. It is fixed in 1.27.0. The application allocates resources such as memory, threads, or file descriptors based on untrusted input without enforcing a cap.

How severe is CVE-2025-31496?

CVE-2025-31496 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of apollo-compiler are affected by CVE-2025-31496?

apollo-compiler (rust) versions < 1.27.0 is affected.

Is there a fix for CVE-2025-31496?

Yes. CVE-2025-31496 is fixed in 1.27.0. Upgrade to this version or later.

Is CVE-2025-31496 exploitable, and should I be worried?

Whether CVE-2025-31496 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2025-31496 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2025-31496?

Upgrade apollo-compiler to 1.27.0 or later.

CVE-2025-31496 in apollo-compiler

Q: How severe is CVE-2025-31496?

CVE-2025-31496 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of apollo-compiler are affected by CVE-2025-31496?

apollo-compiler (rust) versions < 1.27.0 is affected.

Q: Is there a fix for CVE-2025-31496?

Yes. CVE-2025-31496 is fixed in 1.27.0. Upgrade to this version or later.

Q: Is CVE-2025-31496 exploitable, and should I be worried?

Whether CVE-2025-31496 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2025-31496 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2025-31496?

Upgrade apollo-compiler to 1.27.0 or later.

Summary

Apollo Compiler Named Fragment Processing Vulnerability

A vulnerability in Apollo Compiler allowed queries with deeply nested and reused named fragments to be prohibitively expensive to validate. This could lead to excessive resource consumption and denial of service in applications.

Details

Named fragments were being processed once per fragment spread in some cases during query validation, leading to exponential resource usage when deeply nested and reused fragments were involved.

Fix/Mitigation

The validation logic has been updated to process each named fragment only once, preventing redundant traversal.

Workarounds

No known direct workarounds exist.

Acknowledgements

We appreciate the efforts of the security community in identifying and improving the performance and security of query validation mechanisms.

Impact

The application allocates resources such as memory, threads, or file descriptors based on untrusted input without enforcing a cap. Typical impact: resource exhaustion leading to denial of service.

CVE-2025-31496 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.27.0); upgrading removes the vulnerable code path.

Affected versions

apollo-compiler (< 1.27.0)

Security releases

apollo-compiler → 1.27.0 (rust)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

This has been remediated in apollo-compiler version 1.27.0.

Frequently Asked Questions

What is CVE-2025-31496? CVE-2025-31496 is a high-severity allocation of resources without limits or throttling vulnerability in apollo-compiler (rust), affecting versions < 1.27.0. It is fixed in 1.27.0. The application allocates resources such as memory, threads, or file descriptors based on untrusted input without enforcing a cap.
How severe is CVE-2025-31496? CVE-2025-31496 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of apollo-compiler are affected by CVE-2025-31496? apollo-compiler (rust) versions < 1.27.0 is affected.
Is there a fix for CVE-2025-31496? Yes. CVE-2025-31496 is fixed in 1.27.0. Upgrade to this version or later.
Is CVE-2025-31496 exploitable, and should I be worried? Whether CVE-2025-31496 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2025-31496 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2025-31496? Upgrade apollo-compiler to 1.27.0 or later.