graphql Uncontrolled Resource Consumption vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2023-26144: 1.45% estimated exploitation activity in the next 30 days; percentile 73.49 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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.

Published by the source

20 Sep 2023, 06:30 UTC

Last modified by the source

12 Nov 2023, 05:02 UTC

Source last checked

26 Oct 2026, 12:29 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-9pv7-vfvm-6vr7

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-9pv7-vfvm-6vr7

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# Patch Next advisory brief: CVE-2023-26144

Advisory: graphql Uncontrolled Resource Consumption vulnerability
IDs: CVE-2023-26144, GHSA-9pv7-vfvm-6vr7
Record: https://patchnext.com/advisories/cve-2023-26144 (revision 2, source checked 26 Oct 2026, 12:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: graphql 16.8.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm graphql: affected >= 16.3.0, < 16.8.1; fixed in 16.8.1

## Suggested inspection (read-only)
- `npm ls graphql --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on graphql.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-9pv7-vfvm-6vr7 (OSV record GHSA-9pv7-vfvm-6vr7 lists affected ranges: npm graphql >=16.3.0 <16.8.1 (fixed))
- Verified: https://github.com/advisories/GHSA-9pv7-vfvm-6vr7 (GitHub-reviewed advisory GHSA-9pv7-vfvm-6vr7 lists affected ranges: npm graphql >=16.3.0 <16.8.1)

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