CVE-2023-26144

Name: CVE-2023-26144
Creator: NVD / NIST
Published: 2023-09-20T05:15:39.923+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.20%

Last modified Jun 17, 2026

CVE-2023-26144 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Versions of the package graphql from 16.3.0 and before 16.8.1 are vulnerable to Denial of Service (DoS) due to insufficient checks in the OverlappingFieldsCanBeMergedRule.ts file when parsing large queries. This vulnerability allows an attacker to degrade system performance. **Note:** It was not proven that this vulnerability can crash the process.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

Versions of the package graphql from 16.3.0 and before 16.8.1 are vulnerable to Denial of Service (DoS) due to insufficient checks in the OverlappingFieldsCanBeMergedRule.ts file when parsing large queries. This vulnerability allows an attacker to degrade system performance. **Note:** It was not proven that this vulnerability can crash the process.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.20%

64.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Graphql	Graphql	>= 16.3.0, < 16.8.1	—
Graphql	Graphql	17.0.0	Alpha1

References

https://github.com/graphql/graphql-js/commit/f94b511386c7e47bd0380dcd56553dc063320226Patch
https://github.com/graphql/graphql-js/issues/3955Exploit, Issue Tracking, Third Party Advisory
https://github.com/graphql/graphql-js/pull/3972Product
https://github.com/graphql/graphql-js/releases/tag/v16.8.1Release Notes
https://security.snyk.io/vuln/SNYK-JS-GRAPHQL-5905181Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/graphql/graphql-js/commit/f94b511386c7e47bd0380dcd56553dc063320226Patch
https://github.com/graphql/graphql-js/issues/3955Exploit, Issue Tracking, Third Party Advisory
https://github.com/graphql/graphql-js/pull/3972Product
https://github.com/graphql/graphql-js/releases/tag/v16.8.1Release Notes
https://security.snyk.io/vuln/SNYK-JS-GRAPHQL-5905181Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Sep 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-26144?

How severe is CVE-2023-26144?

CVE-2023-26144 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2023-26144?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-26144?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST