CVE-2023-26144: Versions of the package graphql from 16.3.0 and before 16.8.1 are vulnerable to Denial of Service (DoS) due to

Q: How do I fix CVE-2023-26144?

graphql: upgrade to 16.8.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-26144 being exploited?

CVE-2023-26144 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-26144 affect?

CVE-2023-26144 affects graphql. Severity is medium (CVSS 5.3). 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 atta

Q: How urgent is CVE-2023-26144?

Priority 47/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2023-26144 is a medium-severity flaw (CVSS 5.3) affecting graphql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 27%)
CISA exploited list	No
Weakness	CWE-400
Published	2023-09-20
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: graphql

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-20 05:15 UTCPublished CVE record published
2026-06-17 05:42 UTCUpdated Record last modified

graphql graphql UPGRADE

Affected: >= 16.3.0 and < 16.8.1 · 17.0.0 alpha1 · 17.0.0 alpha2

Fixed in: 16.8.1

Safe to downgrade to: a release before 16.3.0

1. Check installed version

npm ls graphql

2. UPGRADE to 16.8.1

npm install graphql@">=16.8.1"

3. If no update is available yet, DOWNGRADE to a release before 16.3.0

npm view graphql versions npm install graphql@"<16.3.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-26144?

graphql: upgrade to 16.8.1. Exact commands for each OS are on this page.

Is CVE-2023-26144 being exploited?

CVE-2023-26144 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-26144 affect?

CVE-2023-26144 affects graphql. Severity is medium (CVSS 5.3). 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 atta

How urgent is CVE-2023-26144?

Priority 47/100. Public exploit reference; Remotely exploitable, no login, no user action

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References

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