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TI-2025-16952 Aliases CVE-2025-23167GHSA-hchw-qwx7-4w4c

A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using…

Priority LOW 35CWE-444Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00508 43rd percentileScored 2026-11-07
Fix Fixed Red Hat: 2 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
NodeJSnode4.0 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; 20.0 – 20.19.1—No fix listedCNA
  • node VendorNodeJS Affected 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; 20.0 – 20.19.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*——NodeJS
  • cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* Versions — — ·NodeJS

Remediation

Red Hat 2 advisories

  • RHSA-2025:8514 Released 2025-06-04 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:20.19.2-1.module+el8.10.0+23139+21ba74c5.aarch64::nodejs:20, nodejs-1:20.19.2-1.module+el8.10.0+23139+21ba74c5.ppc64le::nodejs:20, nodejs-1:20.19.2-1.module+el8.10.0+23139+21ba74c5.s390x::nodejs:20 +20
  • RHSA-2025:8468 Released 2025-06-03 · Red Hat rating Important
    nodejs:20 security update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:20.19.2-1.module+el9.6.0+23146+be9976bd.aarch64::nodejs:20, nodejs-1:20.19.2-1.module+el9.6.0+23146+be9976bd.ppc64le::nodejs:20, nodejs-1:20.19.2-1.module+el9.6.0+23146+be9976bd.s390x::nodejs:20 +20

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:8514
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:8468
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-23167
  2. 2026-10-03 Alias added: GHSA-hchw-qwx7-4w4c

References

Other 1

  • 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-2024-18584 Race condition in NodeJS Node CVSS 3.0HIGH 8.2
  • 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
See all 295 →

Sources

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