CVE-2026-115887

HIGH 7.5

graphql-scalars PhoneNumber scalar is vulnerable to regular expression denial of service

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

GraphQL Scalars is a library of custom GraphQL scalars for creating precise type-safe GraphQL schemas. From 1.24.1 until 2.0.1, GraphQLPhoneNumber in src/scalars/PhoneNumber.ts uses ambiguous nested digit quantifiers that backtrack exponentially when a PhoneNumber value contains a run of digits followed by a character that makes the match fail. GraphQL evaluates parseLiteral during document validation and parseValue during variable coercion before resolver authentication or authorization, so a small unauthenticated request can block the Node.js event loop and stall the server process. serialize is also affected when unvalidated stored values are returned through the scalar. This issue is fixed in version 2.0.1.

CWE	CWE-1333
Vendor	graphql-hive
Product	graphql-scalars
Published	Oct 23, 2026

Stay Ahead of the Next One

Get instant alerts for graphql-hive graphql-scalars

Be the first to know when new high vulnerabilities affecting graphql-hive graphql-scalars are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

graphql-hive / graphql-scalars

>= 1.24.1, < 2.0.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/graphql-hive/graphql-scalars/security/advisories/GHSA-x8rm-f576-gq67 github.com: https://github.com/graphql-hive/graphql-scalars/pull/2719 github.com: https://github.com/graphql-hive/graphql-scalars/commit/210fd2485641afa2452800c00144245c74361701 github.com: https://github.com/graphql-hive/graphql-scalars/releases/tag/v2.0.1