CVE-2024-24750
Backpressure request ignored in fetch() in Undici
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Backpressure request ignored in fetch() in Undici
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
- Record
CVE-2024-24750- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2024-0593
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
- Record
EUVD-2024-0593- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9f24-jqhm-jfcw
fetch(url) leads to a memory leak in undici
Impact
Calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak.
Patches
Patched in v6.6.1
Workarounds
Make sure to always consume the incoming body.
- Record
GHSA-9f24-jqhm-jfcw- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-401
- Updated
- 2026-11-02
NVD
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
- Record
CVE-2024-24750- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-401
- Updated
- 2026-11-02
OSV
Backpressure request ignored in fetch() in Undici
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
- Record
CVE-2024-24750- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVGHSA-9f24-jqhm-jfcw
fetch(url) leads to a memory leak in undici
Impact
Calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak.
Patches
Patched in v6.6.1
Workarounds
Make sure to always consume the incoming body.
- Record
GHSA-9f24-jqhm-jfcw- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-401
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2024-24750
Undici is an HTTP/1.1 client, written from scratch for Node.js. In affected versions calling fetch(url) and not consuming the incoming body ((or consuming it very slowing) will lead to a memory leak. This issue has been addressed in version 6.6.1. Users are advised to upgrade. Users unable to upgrade should make sure to always consume the incoming body.
- Record
UBUNTU-CVE-2024-24750- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
undicinpm |
6.0.0 to 6.6.0 | 6.6.1 |
undicinpm |
6.0.0 up to 6.6.1 | 6.6.1 |
node-undiciUbuntu:24.04:LTS |
All versions, plus listed versions 5.22.1+dfsg1+~cs20.10.10.2-1ubuntu15.26.3+dfsg1+~cs23.10.12-2 |
None known |
node-undiciUbuntu:25.10 |
All versions, plus listed versions 7.3.0+dfsg1+~cs24.12.11-17.3.0+dfsg1+~cs24.12.11-2 |
None known |
node-undiciUbuntu:26.10 |
All versions, plus listed versions 7.18.2+dfsg+~cs3.2.0-1build17.24.6+dfsg+~cs3.2.0-38.5.0+dfsg+~cs3.2.0-28.5.0+dfsg+~cs3.2.0-38.9.0+dfsg+~cs3.2.0-1 |
None known |
node-undiciUbuntu:26.04:LTS |
All versions, plus listed versions 7.3.0+dfsg1+~cs24.12.11-27.16.0+dfsg+~cs3.2.0-27.18.2+dfsg+~cs3.2.0-17.18.2+dfsg+~cs3.2.0-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-24750 is a medium vulnerability (CVSS 6.5) in Nodejs Undici, published February 16, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in undici 6.6.1.
References
github.com/nodejs/undici/security/advisories/GHSA-9f24-jqhm-jfcw
security.netapp.com/advisory/ntap-20240419-0006
nvd.nist.gov/vuln/detail/CVE-2024-24750