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Fencer Intel
high 7.4

CVE-2020-8201 json

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users.

published 6y ago modified 2mo ago also BIT-node-2020-8201 , BIT-node-min-2020-8201 , EUVD-2020-29078

cvss
7.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names.

Patch / fix

  • bitnami node 12.18.4, 14.11.0
  • bitnami node-min 12.18.4, 14.11.0
  • NodeJS Node 12.18.4, 14.11.0
  • nodejs Debian 14, Debian 13, Debian 12 12.18.4~dfsg-1

debian advisories DEBIAN-CVE-2020-8201

  • rh-nodejs12-nodejs RHEL 3 SOFTWARE_COLLECTIONS 12.18.4-3.el7
  • rh-nodejs12-npm RHEL 3 SOFTWARE_COLLECTIONS 6.14.6-12.18.4.3.el7
  • npm RHEL 8 1:6.14.6-1.12.18.4.2.module+el8.2.0+8361+192e434e
  • nodejs RHEL 8 1:12.18.4-2.module+el8.2.0+8361+192e434e
  • nodejs-nodemon RHEL 8, RHEL 8.1 EUS 1.18.3-1.module+el8.1.0+3369+37ae6a45
  • nodejs-full-i18n RHEL 8 1:12.18.4-2.module+el8.2.0+8361+192e434e
  • nodejs-packaging RHEL 8, RHEL 8.1 EUS 17-3.module+el8.1.0+3369+37ae6a45
  • npm RHEL 8.1 EUS 1:6.14.6-1.12.18.4.2.module+el8.1.0+8360+14141500

red hat advisories RHSA-2020:5086RHSA-2020:4272RHSA-2020:4903

  • nodejs12 SLE Module for Web and Scripting 15 SP2 12.18.4-4.6.1
  • nodejs12 SLE Module for Web and Scripting 12 12.18.4-1.20.1

suse advisories SUSE-SU-2020:2813-1SUSE-SU-2020:2812-1

  • nodejs14 openSUSE Tumbleweed 14.17.5-1.2
  • nodejs12 openSUSE Leap 15.2 12.18.4-lp152.3.6.1

opensuse advisories openSUSE-SU-2024:11096-1openSUSE-SU-2020:1616-1

  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2023+d2377ea3
  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2224+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.3.0+2023+d2377ea3

almalinux advisories ALSA-2020:4272

  • nodejs-nodemon Rocky Linux 8 1.18.3-1.module+el8.3.0+101+f84c7154
  • nodejs-packaging Rocky Linux 8 17-3.module+el8.3.0+101+f84c7154

rocky linux advisories RLSA-2020:4272

  • nodejs Alpine 3.11 12.20.1-r0
  • nodejs Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 12.18.4-r0
  • nodejs-current Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 14.11.0-r0

alpine advisories ALPINE-CVE-2020-8201

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-8201 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8201 updated cvss 7.4

nodejs: HTTP request smuggling due to CR-to-Hyphen conversion

  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more
    affected: no fix available
  • Red Hat Quay 3 quay
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 12.18.4-2.module+el8.2.0+8361+192e434e, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, npm 6.14.6-1.12.18.4.2.module+el8.2.0+8361+192e434e, nodejs-nodemon 1.18.3-1.module+el8.1.0+3369+37ae6a45, nodejs-full-i18n 12.18.4-2.module+el8.2.0+8361+192e434e
    fixed: vendor fix RHSA-2020:4272
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) nodejs 12.18.4-2.module+el8.1.0+8360+14141500, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, npm 6.14.6-1.12.18.4.2.module+el8.1.0+8360+14141500, nodejs-nodemon 1.18.3-1.module+el8.1.0+3369+37ae6a45, nodejs-full-i18n 12.18.4-2.module+el8.1.0+8360+14141500
    fixed: vendor fix RHSA-2020:4903
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7
    fixed: vendor fix RHSA-2020:5086
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat Software Collections rh-nodejs10-npm, rh-nodejs10-nodejs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-22-111-03 updated cvss 7.4

Hitachi Energy MicroSCADA Pro/X SYS600

  • Hitachi Energy SYS600 <= 10.1.1, <=9.4 FP1, >= 10.2.1, >= 10.0.0, <= 10.2.1
    affected: mitigation “For more information see Hitachi Energy advisory 8DBD000075” search.abb.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

5.30% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
OSV 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami node
>=12.0.0, <12.18.4
>=14.0.0, <14.11.0
12.18.4
14.11.0
bitnami node-min
>=12.0.0, <12.18.4
>=14.0.0, <14.11.0
12.18.4
14.11.0

Affected products

  • NodeJS Node

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.