synced 7 MIN AGO
01 Record

CVE-2022-35256

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.

MediumPUBLISHEDCNA: hackerone
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
View raw JSON

02 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.

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.76% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 85.8% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-12-05 00:00Z3 YR AGO
Last updated
2025-04-30 22:24Z1 YR AGO
Reserved
2022-07-06
Assigning CNA
hackerone
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weaknesses
  • CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
Data version
5.1
Document digest
b6593245e633633ea244f7fd2d88df19417a063acaabe26e195c3d416fc06482

05 Affected products

VendorProductVersionsPlatforms
NodeJSNode4.0 to < 4.*, 5.0 to < 5.*, 6.0 to < 6.*, 7.0 to < 7.*, 8.0 to < 8.*, 9.0 to < 9.*, 10.0 to < 10.*, 11.0 to < 11.*, 12.0 to < 12.*, 13.0 to < 13.*, 14.0 to < 14.20.1, 15.0 to < 15.*, 16.0 to < 16.17.1, 17.0 to < 17.*, 18.0 to < 18.9.1—

06 References

07 Fixed in

AlmaLinux 8

  • nodejs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.0.19-1.module_el8.7.0+3343+ea2b7901
    • Affected before 2.0.19-2.module_el8.6.0+3261+490666b3
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-4.module_el8.7.0+3343+ea2b7901
    • Affected before 23-3.module_el8.4.0+2522+3bd42762
    • Affected before 25-1.module_el8.5.0+2605+45d748af
  • nodejs-packaging-bundler
    Fixed in 2021.06-4.module_el8.7.0+3343+ea2b7901
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:6.14.17-1.14.20.1.2.module_el8.7.0+3342+b2df8497
    • Affected before 1:8.15.0-1.16.17.1.1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:8.19.1-1.18.9.1.1.module_el8.7.0+3343+ea2b7901

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • nodejs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-nodemon
    Fixed in 2.0.20-2.el9_1
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:8.15.0-1.16.17.1.1.el9_0
    • Affected before 1:8.19.2-1.16.18.1.3.el9_1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • nodejs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:14.20.1-2.module_el8.7.0+3342+b2df8497
    • Affected before 1:16.17.1-1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:18.9.1-1.module_el8.7.0+3343+ea2b7901
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.0.19-1.module_el8.7.0+3343+ea2b7901
    • Affected before 2.0.19-2.module_el8.6.0+3261+490666b3
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-4.module_el8.7.0+3343+ea2b7901
    • Affected before 23-3.module_el8.4.0+2522+3bd42762
    • Affected before 25-1.module_el8.5.0+2605+45d748af
  • nodejs-packaging-bundler
    Fixed in 2021.06-4.module_el8.7.0+3343+ea2b7901
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:6.14.17-1.14.20.1.2.module_el8.7.0+3342+b2df8497
    • Affected before 1:8.15.0-1.16.17.1.1.module_el8.6.0+3328+2e4711d7
    • Affected before 1:8.19.1-1.18.9.1.1.module_el8.7.0+3343+ea2b7901

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • nodejs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:16.17.1-1.el9_0
    • Affected before 1:16.18.1-3.el9_1
  • nodejs-nodemon
    Fixed in 2.0.20-2.el9_1
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:8.15.0-1.16.17.1.1.el9_0
    • Affected before 1:8.19.2-1.16.18.1.3.el9_1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • nodejs
    Fixed in 18.10.0+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • nodejs
    Fixed in 18.10.0+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • nodejs
    Fixed in 18.10.0+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • nodejs
    Fixed in 12.22.9~dfsg-1ubuntu3.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.