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TI-2026-17483 Aliases CVE-2026-21710GHSA-xv6w-gxj8-v943

Resource allocation without limits in NodeJS node

Priority MEDIUM 60CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

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, `dest["__proto__"]` resolves to `Object.prototype` rather than `undefined`, causing `.push()` to be called on a non-array. This exception is thrown synchronously inside a property getter and cannot be intercepted by `error` event listeners, meaning it cannot be handled without wrapping every `req.headersDistinct` access in a `try/catch`. * This vulnerability affects all Node.js HTTP servers on **20.x, 22.x, 24.x, and v25.x**

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.25443 97th percentileScored 2026-11-07
Fix Fixed Red Hat: 12 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NodeJSnode20.20.1 – 20.20.1; 22.22.1 – 22.22.1; 24.14.0 – 24.14.0; 25.8.1 – 25.8.1; 4.0 and later; 5.0 and later; 6.0 and later; 7.0 and later; 8.0 and later; 9.0 and later; 10.0 and later; 11.0 and later; 12.0 and later; 13.0 and later; 14.0 and later; 15.0 and later; 16.0 and later; 17.0 and later; 18.0 and later; 19.0 and later—No fix listedCNA
  • node VendorNodeJS Affected 20.20.1 – 20.20.1; 22.22.1 – 22.22.1; 24.14.0 – 24.14.0; 25.8.1 – 25.8.1; 4.0 and later; 5.0 and later; 6.0 and later; 7.0 and later; 8.0 and later; 9.0 and later; 10.0 and later; 11.0 and later; 12.0 and later; 13.0 and later; 14.0 and later; 15.0 and later; 16.0 and later; 17.0 and later; 18.0 and later; 19.0 and later Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*up to 20.20.1; 22.0.0 – 22.22.1; 24.0.0 – 24.14.0; 25.0.0 – 25.8.1VulnerableNodeJS
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*10.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:*9.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:9.6:*:*:*:*:*:*:*9.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:10.0:*:*:*:*:*:*:*10.0VulnerableRed Hat
  • cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions up to 20.20.1; 22.0.0 – 22.22.1; 24.0.0 – 24.14.0; 25.0.0 – 25.8.1 Vulnerable ·NodeJS
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:* Versions 9.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:9.6:*:*:*:*:*:*:* Versions 9.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat

Remediation

Red Hat 12 advisories

  • RHSA-2026:9874 Released 2026-04-22 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) nodejs-1:20.20.2-2.module+el9.6.0+24220+c44c288d.aarch64::nodejs:20, nodejs-1:20.20.2-2.module+el9.6.0+24220+c44c288d.ppc64le::nodejs:20, nodejs-1:20.20.2-2.module+el9.6.0+24220+c44c288d.s390x::nodejs:20 +20
  • RHSA-2026:9711 Released 2026-04-22 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) nodejs-1:20.20.2-2.module+el9.4.0+24216+64c58546.aarch64::nodejs:20, nodejs-1:20.20.2-2.module+el9.4.0+24216+64c58546.ppc64le::nodejs:20, nodejs-1:20.20.2-2.module+el9.4.0+24216+64c58546.s390x::nodejs:20 +20
  • RHSA-2026:8339 Released 2026-04-15 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:20.20.2-1.module+el8.10.0+24197+1602b452.aarch64::nodejs:20, nodejs-1:20.20.2-1.module+el8.10.0+24197+1602b452.ppc64le::nodejs:20, nodejs-1:20.20.2-1.module+el8.10.0+24197+1602b452.s390x::nodejs:20 +20
Show 9 more Red Hat advisories
  • RHSA-2026:7983 Released 2026-04-14 · Red Hat rating Important
    nodejs:22 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) nodejs-1:22.22.2-1.module+el9.6.0+24196+39669d4e.aarch64::nodejs:22, nodejs-1:22.22.2-1.module+el9.6.0+24196+39669d4e.ppc64le::nodejs:22, nodejs-1:22.22.2-1.module+el9.6.0+24196+39669d4e.s390x::nodejs:22 +28
  • RHSA-2026:7896 Released 2026-04-13 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:20.20.2-1.module+el9.7.0+24193+41b7b572.aarch64::nodejs:20, nodejs-1:20.20.2-1.module+el9.7.0+24193+41b7b572.ppc64le::nodejs:20, nodejs-1:20.20.2-1.module+el9.7.0+24193+41b7b572.s390x::nodejs:20 +20
  • RHSA-2026:7670 Released 2026-04-13 · Red Hat rating Important
    nodejs:24 security update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:24.14.1-2.module+el8.10.0+24190+49a46c75.aarch64::nodejs:24, nodejs-1:24.14.1-2.module+el8.10.0+24190+49a46c75.ppc64le::nodejs:24, nodejs-1:24.14.1-2.module+el8.10.0+24190+49a46c75.s390x::nodejs:24 +25
  • RHSA-2026:7675 Released 2026-04-13 · Red Hat rating Important
    nodejs24 security update
    • Red Hat Enterprise Linux AppStream (v. 10) nodejs24-1:24.14.1-2.el10_1, nodejs24-devel-1:24.14.1-2.el10_1, nodejs24-docs-1:24.14.1-2.el10_1 +3
  • RHSA-2026:7350 Released 2026-04-09 · Red Hat rating Important
    nodejs:24 security update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:24.14.1-2.module+el9.7.0+24166+51c9666b.aarch64::nodejs:24, nodejs-1:24.14.1-2.module+el9.7.0+24166+51c9666b.ppc64le::nodejs:24, nodejs-1:24.14.1-2.module+el9.7.0+24166+51c9666b.s390x::nodejs:24 +25
  • RHSA-2026:7310 Released 2026-04-09 · Red Hat rating Important
    nodejs22 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) nodejs-1:22.22.2-2.el10_0, nodejs-devel-1:22.22.2-2.el10_0, nodejs-docs-1:22.22.2-2.el10_0 +4
  • RHSA-2026:7302 Released 2026-04-09 · Red Hat rating Important
    nodejs:22 security update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:22.22.2-1.module+el9.7.0+24157+8ddb2461.aarch64::nodejs:22, nodejs-1:22.22.2-1.module+el9.7.0+24157+8ddb2461.ppc64le::nodejs:22, nodejs-1:22.22.2-1.module+el9.7.0+24157+8ddb2461.s390x::nodejs:22 +28
  • RHSA-2026:7123 Released 2026-04-08 · Red Hat rating Important
    nodejs:22 security update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:22.22.2-1.module+el8.10.0+24148+847b6786.aarch64::nodejs:22, nodejs-1:22.22.2-1.module+el8.10.0+24148+847b6786.ppc64le::nodejs:22, nodejs-1:22.22.2-1.module+el8.10.0+24148+847b6786.s390x::nodejs:22 +28
  • RHSA-2026:7080 Released 2026-04-08 · Red Hat rating Important
    nodejs22 security update
    • Red Hat Enterprise Linux AppStream (v. 10) nodejs-1:22.22.2-1.el10_1, nodejs-devel-1:22.22.2-1.el10_1, nodejs-docs-1:22.22.2-1.el10_1 +4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    nodejs node 10.*, 11.* and 14 more versions

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-17486 A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating…Priority LOW 33
    • TI-2026-17490 A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their…Priority LOW 26
    • TI-2026-17484 Improper access control in NodeJS nodePriority LOW 23
    Show all 5 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:7080, RHSA-2026:7675
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:7123, RHSA-2026:7670, RHSA-2026:8339
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:7302, RHSA-2026:7350, RHSA-2026:7896
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:7310
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:9711
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:7983, RHSA-2026:9874

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21710
  2. 2026-10-03 Alias added: GHSA-xv6w-gxj8-v943

References

Advisory 15

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2016-01993 The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other… CVSS 3.1HIGH 7.5
  • TI-2024-03325 Command injection vulnerability in programing languages on Microsoft Windows operating system. CVSS 3.1CRITICAL 9.8
  • TI-2022-03472 X.509 Email Address Variable Length Buffer Overflow CVSS 3.1HIGH 7.5
  • TI-2022-03315 X.509 Email Address 4-byte Buffer Overflow CVSS 3.1HIGH 7.5
See all 186 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences