Is CVE-2022-35256 in the CISA KEV catalog?

No. CVE-2022-35256 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-35256?

CVE-2022-35256 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-35256?

CVE-2022-35256 has an EPSS score of 2.59% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-35256?

Upgrade libnode-dev on ubuntu 20.04 to 10.19.0~dfsg-3ubuntu1.3 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2022-35256

MEDIUMEPSS 83th pctl

6.5

CVSS v3

NVD

Description

The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.

CWE-444

How to fix

Remediation Available

libnode-devUbuntu

Fixed in:10.19.0~dfsg-3ubuntu1.3USN-6491-1

Fixed in:12.22.9~dfsg-1ubuntu3.2USN-6491-1

libnode64Ubuntu

Fixed in:10.19.0~dfsg-3ubuntu1.3USN-6491-1

libnode72Ubuntu

Fixed in:12.22.9~dfsg-1ubuntu3.2USN-6491-1

nodejsUbuntu

Fixed in:8.10.0~dfsg-2ubuntu0.4+esm4USN-6491-1

Fixed in:10.19.0~dfsg-3ubuntu1.3USN-6491-1

Fixed in:12.22.9~dfsg-1ubuntu3.2USN-6491-1

nodejs-devUbuntu

Fixed in:8.10.0~dfsg-2ubuntu0.4+esm4USN-6491-1

nodejs-docUbuntu

Fixed in:8.10.0~dfsg-2ubuntu0.4+esm4USN-6491-1

Fixed in:10.19.0~dfsg-3ubuntu1.3USN-6491-1

Fixed in:12.22.9~dfsg-1ubuntu3.2USN-6491-1

Node.jsWindows application

Affected:18.0.0 18.9.1Fixed in:18.9.1Node.js Foundation

Affected:16.13.0 16.17.1Fixed in:16.17.1Node.js Foundation

Affected:14.15.0 14.20.1Fixed in:14.20.1Node.js Foundation

Node.js (LTS)Windows application

Affected:14.15.0 14.20.1Fixed in:14.20.1Node.js Foundation

Affected:18.0.0 18.9.1Fixed in:18.9.1Node.js Foundation

Affected:16.13.0 16.17.1Fixed in:16.17.1Node.js Foundation

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

2.59%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Exploit1

hackerone.com

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-24.