synced 8 MIN AGO
01 Record

CVE-2026-21710

A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`. When this occurs,

HighPUBLISHEDCNA: hackerone
CNA base score7.5 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`. When this occurs,

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • 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
25.44% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 97.9% of scored records. A rank, not a probability.
NVD base score
7.5 (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:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-08-19.
Red Hat severity
Important. 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
2026-03-30 19:07Z7 MO AGO
Last updated
2026-07-15 01:19Z3 MO AGO
Reserved
2026-01-04
Assigning CNA
hackerone
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
  • CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base
Data version
5.2
Document digest
81d1a675cc1697970463095c09ef82109fd117eeddd78729b2470577290fdcf5

05 Affected products

VendorProductVersionsPlatforms
nodejsnode20.20.1 to 20.20.1, 22.22.1 to 22.22.1, 24.14.0 to 24.14.0, 25.8.1 to 25.8.1, 4.0 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.*, 15.0 to < 15.*, 16.0 to < 16.*, 17.0 to < 17.*, 18.0 to < 18.*, 19.0 to < 19.*—

06 References

07 Fixed in

AlmaLinux 8

  • nodejs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.0.1-1.module_el8.10.0+3982+85c136aa
    • Affected before 3.0.1-1.module_el8.10.0+4006+3c416519
    • Affected before 3.0.3-1.module_el8.10.0+4061+f8ceeab9
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el8.10.0+4086+70facd4a
    • Affected before 2021.06-6.module_el8.10.0+4158+e796f37f
    • Affected before 2021.06-6.module_el8.10.0+4165+3f200bda
  • nodejs-packaging-bundler
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el8.10.0+4086+70facd4a
    • Affected before 2021.06-6.module_el8.10.0+4158+e796f37f
    • Affected before 2021.06-6.module_el8.10.0+4165+3f200bda
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:10.8.2-1.20.20.2.1.module_el8.10.0+4165+3f200bda
    • Affected before 1:10.9.7-1.22.22.2.1.module_el8.10.0+4158+e796f37f
    • Affected before 1:11.11.0-1.24.14.1.2.module_el8.10.0+4160+4819ac42
  • v8-12.4-devel
    Fixed in 3:12.4.254.21-1.22.22.2.1.module_el8.10.0+4158+e796f37f
  • v8-13.6-devel
    Fixed in 3:13.6.233.17-1.24.14.1.2.module_el8.10.0+4160+4819ac42

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 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-libs
    Fixed in 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.0.1-1.module_el9.5.0+125+8dc38870
    • Affected before 3.0.3-3.module_el9.7.0+209+ecf6523e
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el9.7.0+209+ecf6523e
    • Affected before 2021.06-6.module_el9.7.0+226+88d36870
  • nodejs-packaging-bundler
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el9.7.0+198+8bf605ba
    • Affected before 2021.06-6.module_el9.7.0+226+88d36870
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:10.8.2-1.20.20.2.1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:10.8.2-1.20.20.2.1.module_el9.7.0+226+88d36870
    • Affected before 1:11.11.0-1.24.14.1.2.module_el9.7.0+222+ef1c61e1
  • v8-13.6-devel
    Fixed in 3:13.6.233.17-1.24.14.1.2.module_el9.7.0+222+ef1c61e1

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

AlmaLinux 10

  • nodejs-docs
    Fixed in 1:22.22.2-1.el10_1
  • nodejs24-docs
    Fixed in 1:24.14.1-2.el10_1
  • nodejs24-npm
    Fixed in 1:11.11.0-1.24.14.1.2.el10_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 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el8.10.0+4165+3f200bda
    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:22.22.2-1.module_el8.10.0+4158+e796f37f
    • Affected before 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.0.1-1.module_el8.10.0+3982+85c136aa
    • Affected before 3.0.1-1.module_el8.10.0+4006+3c416519
    • Affected before 3.0.3-1.module_el8.10.0+4061+f8ceeab9
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el8.10.0+4086+70facd4a
    • Affected before 2021.06-6.module_el8.10.0+4158+e796f37f
    • Affected before 2021.06-6.module_el8.10.0+4165+3f200bda
  • nodejs-packaging-bundler
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el8.10.0+4086+70facd4a
    • Affected before 2021.06-6.module_el8.10.0+4158+e796f37f
    • Affected before 2021.06-6.module_el8.10.0+4165+3f200bda
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:10.8.2-1.20.20.2.1.module_el8.10.0+4165+3f200bda
    • Affected before 1:10.9.7-1.22.22.2.1.module_el8.10.0+4158+e796f37f
    • Affected before 1:11.11.0-1.24.14.1.2.module_el8.10.0+4160+4819ac42
  • v8-12.4-devel
    Fixed in 3:12.4.254.21-1.22.22.2.1.module_el8.10.0+4158+e796f37f
  • v8-13.6-devel
    Fixed in 3:13.6.233.17-1.24.14.1.2.module_el8.10.0+4160+4819ac42

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 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-docs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-full-i18n
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:20.20.2-1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:20.20.2-1.module_el9.7.0+226+88d36870
    • Affected before 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-libs
    Fixed in 1:24.14.1-2.module_el9.7.0+222+ef1c61e1
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.0.1-1.module_el9.5.0+125+8dc38870
    • Affected before 3.0.3-3.module_el9.7.0+209+ecf6523e
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el9.7.0+209+ecf6523e
    • Affected before 2021.06-6.module_el9.7.0+226+88d36870
  • nodejs-packaging-bundler
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2021.06-6.module_el9.7.0+198+8bf605ba
    • Affected before 2021.06-6.module_el9.7.0+226+88d36870
  • npm
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:10.8.2-1.20.20.2.1.module_el9.7.0+224+0af7cc6b
    • Affected before 1:10.8.2-1.20.20.2.1.module_el9.7.0+226+88d36870
    • Affected before 1:11.11.0-1.24.14.1.2.module_el9.7.0+222+ef1c61e1
  • v8-13.6-devel
    Fixed in 3:13.6.233.17-1.24.14.1.2.module_el9.7.0+222+ef1c61e1

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.

CloudLinux 10

  • nodejs-docs
    Fixed in 1:22.22.2-1.el10_1
  • nodejs24-docs
    Fixed in 1:24.14.1-2.el10_1
  • nodejs24-npm
    Fixed in 1:11.11.0-1.24.14.1.2.el10_1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 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 18.20.4+dfsg-1~deb12u2

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

Debian 13

  • nodejs
    Fixed in 20.19.2+dfsg-1+deb13u2

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

Debian 14

  • nodejs
    Fixed in 22.22.2+dfsg+~cs22.19.15-1

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

Ubuntu 24.04 LTS

  • nodejs
    No fix yet

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

Ubuntu 25.10

  • nodejs
    No fix yet

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

Ubuntu 26.04 LTS

  • nodejs
    No fix yet

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

Ubuntu 26.10

  • nodejs
    No fix yet

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

Ubuntu Pro 14.04 LTS

  • nodejs
    No fix yet

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

Ubuntu Pro 16.04 LTS

  • nodejs
    No fix yet

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

Ubuntu Pro 18.04 LTS

  • nodejs
    No fix yet

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

Ubuntu Pro 20.04 LTS

  • nodejs
    No fix yet

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

Ubuntu Pro 22.04 LTS

  • nodejs
    No fix yet

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.