nodejs undici up to 6.22.x/7.18.1 allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in nodejs undici up to 6.22.x/7.18.1. This issue affects some unknown processing. The manipulation leads to allocation of resources. This vulnerability is uniquely identified as CVE-2026-22036. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in nodejs undici up to 6.22.x/7.18.1. This issue affects some unknown functionality. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation. This vulnerability is fixed in 7.18.0 and 6.23.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-22036 since 01/05/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 296677 (SUSE SLES15 / openSUSE 15 Security Update : nodejs22 (SUSE-SU-2026:0295-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.23.0 or 7.18.2 eliminates this vulnerability. Applying the patch b04e3cbb569c1596f86c108e9b52c79d8475dcb3 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (296677) and EUVD (EUVD-2026-2422). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 5.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 296677
Nessus Name: SUSE SLES15 / openSUSE 15 Security Update : nodejs22 (SUSE-SU-2026:0295-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: undici 6.23.0/7.18.2
Patch: b04e3cbb569c1596f86c108e9b52c79d8475dcb3

Timelineinfo

01/05/2026 CVE reserved
01/14/2026 +9 days Advisory disclosed
01/14/2026 +0 days VulDB entry created
01/27/2026 +13 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-g9mf-h72j-4rw9
Status: Confirmed

CVE: CVE-2026-22036 (🔒)
GCVE (CVE): GCVE-0-2026-22036
GCVE (VulDB): GCVE-100-341147
EUVD: 🔒

Entryinfo

Created: 01/14/2026 21:35
Updated: 01/27/2026 16:23
Changes: 01/14/2026 21:35 (65), 01/14/2026 23:39 (1), 01/21/2026 18:07 (11), 01/24/2026 12:05 (4), 01/27/2026 16:23 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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