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CVE-2026-107376

8.2 · HIGH

webonyx graphql-php is a PHP implementation of the GraphQL specification.

Published Oct 8, 2026CWE-674EPSS 0.45%

Overview

CVE-2026-107376 is a high-severity vulnerability. It was published on October 8, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

webonyx graphql-php is a PHP implementation of the GraphQL specification. Prior to 15.32.3, GraphQL\Language\Parser performs recursive descent without a recursion limit in parseSelectionSet, parseValueLiteral, and parseTypeReference. A remote attacker can submit deeply nested selection sets, object or list values, or list types that exhaust the PHP process stack during pre-validation parsing, before query validation and complexity controls run. The resulting SIGSEGV can terminate PHP-FPM workers or long-running Swoole, RoadRunner, ReactPHP, or CLI processes and cannot be caught by application-level exception handling. This issue is fixed in version 15.32.3.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/webonyx/graphql-php/commit/6c1d6009a0f7557f66753bcfd07badd15acf77f4GitHubgithub.com/webonyx/graphql-php/commit/7b7f2080ca5f7d5340a696fc5701b19a9222d2c2GitHubgithub.com/webonyx/graphql-php/releases/tag/v15.32.3GitHubgithub.com/webonyx/graphql-php/security/advisories/GHSA-r7cg-qjjm-xhqqGitHubgithub.com/webonyx/graphql-php/security/advisories/GHSA-r7cg-qjjm-xhqq

How CyberStrike helps

Frequently asked questions

What is CVE-2026-107376?

CVE-2026-107376 is a high-severity vulnerability. It was published on October 8, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-107376?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-107376?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-107376?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-107376 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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