CVE-2026-115887

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

CVSS score

7.5

EPSS probability

—

Risk score

0.8

Published

2 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Regular Expression Denial of Service Vulnerability in graphql-scalars

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

The PhoneNumber scalar in the graphql-scalars library contains a vulnerability that performs exponential backtracking due to ambiguous nested digit quantifiers, leading to a denial of service.

Why does it matter?

A small unauthenticated request can block the Node.js event loop and stall the server process.

What should be done?

Follow vendor security advisories
Keep versions updated
Review input validation mechanisms

Chain of evidence and sources2 verified claims

graphql-scalars kütüphanesinin 1.24.1 ile 2.0.1 sürümleri arasında PhoneNumber scalar bileşeni hizmet engelleme zafiyetinden etkilenmektedir.

S0 · daybreach-canonical S1 · cvelist

GraphQL, kimlik doğrulamadan önce parseLiteral ve parseValue fonksiyonlarını değerlendirdiği için kimliği doğrulanmamış küçük bir istek sunucuyu durdurabilir.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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.

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

CWE: CWE-1333

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-115887 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	graphql-hive	graphql-scalars	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
7.5	CVSS V3_1	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CVE CNA
7.5	CVSS V31	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-115887 is associated with the following CWEs:

CWE-1333: Common Weakness Enumeration Entry CWE-1333

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-115887 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

https://github.com/graphql-hive/graphql-scalars/security/advisories/GHSA-x8rm-f576-gq67vendor-advisory https://github.com/graphql-hive/graphql-scalars/pull/2719vendor-advisory https://github.com/graphql-hive/graphql-scalars/commit/210fd2485641afa2452800c00144245c74361701vendor-advisory https://github.com/graphql-hive/graphql-scalars/releases/tag/v2.0.1vendor-advisory

CVSS Vector Radar Chart

7.5 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

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Follow the vendor

graphql-hive

Weakness Type (CWE & CAPEC)

CWE-1333

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