CVE-2026-107376webonyx graphql-php: Unbounded recursion in parser causes stack overflow on crafted nested input
Updated under an hour ago ()
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It affects webonyx graphql-php. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.45%, higher than 38% of scored CVEs.
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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.
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weakness (CWE)
- CWE-674
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.45% (percentile 38)
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
webonyx graphql-php webonyx:graphql_php (from the name) | before 15.32.3 | CNA record |
References
- https://github.com/webonyx/graphql-php/security/advisories/GHSA-r7cg-qjjm-xhqqx-refsource-confirm
- https://github.com/webonyx/graphql-php/commit/6c1d6009a0f7557f66753bcfd07badd15acf77f4x-refsource-misc
- https://github.com/webonyx/graphql-php/commit/7b7f2080ca5f7d5340a696fc5701b19a9222d2c2x-refsource-misc
- https://github.com/webonyx/graphql-php/releases/tag/v15.32.3x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.