Directus GraphQL Field Duplication Denial of Service (DoS)

Exploitation

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

CVSS 4.0

7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2024-39895: 0.80% estimated exploitation activity in the next 30 days; percentile 56.46 (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.

Summary A denial of service (DoS) attack by field duplication in GraphQL is a type of attack where an attacker exploits the flexibility of GraphQL to overwhelm a server by requesting the same field multiple times in a single query. This can cause the server to perform redundant computations and consume excessive resources, leading to a denial of service for legitimate users. Details Request to the endpoint /graphql are sent when visualizing graphs generated at a dashboard: By modifying the data sent and duplicating many times the fields a DoS attack is possible. PoC The goal is to create a payload that generates a body like this, where the 'max' field is duplicated many times, each with the 'id' field duplicated many times inside it. {'query': 'query { query4f4722ea: testtableaggregated { max {id id id id id id id id id id } max {id id id id id id id id id id } max {id id id id id id id id id id } max {id id id id id id id id id id } max {id id id id id id id id id id } max {id id id…

Published by the source

8 Jul 2024, 18:41 UTC

Last modified by the source

10 Sep 2026, 03:50 UTC

Source last checked

26 Oct 2026, 12:31 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-7hmh-pfrp-vcx4

2. Revision 2 · amended · 24 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-7hmh-pfrp-vcx4

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# Patch Next advisory brief: CVE-2024-39895

Advisory: Directus GraphQL Field Duplication Denial of Service (DoS)
IDs: CVE-2024-39895, GHSA-7hmh-pfrp-vcx4
Record: https://patchnext.com/advisories/cve-2024-39895 (revision 3, source checked 26 Oct 2026, 12:31 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @directus/env 1.1.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @directus/env: affected < 1.1.6; fixed in 1.1.6

## Suggested inspection (read-only)
- `npm ls @directus/env --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 @directus/env.
- 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-7hmh-pfrp-vcx4 (OSV record GHSA-7hmh-pfrp-vcx4 lists affected ranges: npm @directus/env >=0 <1.1.6 (fixed))
- Verified: https://github.com/advisories/GHSA-7hmh-pfrp-vcx4 (GitHub-reviewed advisory GHSA-7hmh-pfrp-vcx4 lists affected ranges: npm @directus/env >=0 <1.1.6)

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