CVE-2022-35256

MEDIUMNVD 6.59.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-12-06. NVD baseline CVSS 6.5; sources differ by 3.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 3%CVSS: 6.5Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
6.5
EG Score
9.8(medium)
EPSS
83.6%
KEV
Not listed

Published

December 5, 2022

Last Modified

April 24, 2025

References (6)

Vendor Advisories for CVE-2022-35256(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunodejs-doc (12.22.9~dfsg-1ubuntu3.2) @ jammy2026-05-25ubuntu
redhatnodejs:14-8060020230306170237.ad008a3a2023-04-12redhat
redhatnodejs:14-8040020230306170312.522a0ee42023-03-30redhat
redhatnodejs-1:16.18.1-3.el9_12023-01-23redhat
redhatnodejs:18-8070020221004121421.bd1311ed2022-11-08redhat
redhatnodejs:14-8070020221020110846.bd1311ed2022-11-08redhat
redhatrh-nodejs14-nodejs-0:14.20.1-2.el72022-10-19redhat
redhatnodejs-1:16.17.1-1.el9_02022-10-18redhat
redhatnodejs:16-8060020221007164523.ad008a3a2022-10-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(8)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
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  12. 2026-07-16 13:53 UTCOSV refresh
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  1. 2026-07-07 13:44 UTCEPSS rescore
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  13. 2026-06-28 12:49 UTCOSV refresh
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  26. 2026-06-19 19:24 UTCEPSS rescore
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  38. 2026-06-11 13:58 UTCEPSS rescore
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  40. 2026-06-10 22:59 UTCOSV refresh
  41. 2026-06-10 22:17 UTCEPSS rescore
  42. 2026-06-10 13:20 UTCEPSS rescore
  43. 2026-06-07 15:23 UTCEPSS rescore
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  45. 2026-06-06 13:46 UTCEPSS rescore
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  74. 2026-05-25 11:12 UTCEG score recompute
  75. 2026-05-25 11:12 UTCVendor advisory

Frequently asked(5)

What is CVE-2022-35256?
CVE-2022-35256 is a medium vulnerability published on December 5, 2022. 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.
When was CVE-2022-35256 disclosed?
CVE-2022-35256 was first published in the National Vulnerability Database on December 5, 2022, with the most recent update on April 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-35256 actively exploited?
CVE-2022-35256 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-35256?
CVE-2022-35256 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2022-35256?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-35256, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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