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TI-2026-79960 Aliases CVE-2026-106069

Improper certificate validation in Node.js TLS IPv4 hostnames

Priority LOW 34CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 2 fixed, 3 without a fix

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

Node.js 22.x, 24.x and 26.x are affected, including versions 22.23.3, 24.22.0 and 26.12.0. TLS hostname checking reads a leading-zero IPv4 address such as 0127.0.0.1 differently from the operating system resolver, so a certificate issued for another IP address can be accepted (CWE-295). A remote attacker with no privileges and no user interaction can present such a certificate to impersonate the server, although the attack complexity is high.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

A flaw in Node.js TLS hostname verification can cause a server certificate to be validated against a different IP address than the one the client connected to, when the host is a non-canonical IPv4 literal with a leading zero, such as `0127.0.0.1`. `tls.checkServerIdentity()` normalizes the host following the WHATWG URL rules, which read a leading-zero octet as octal (`0127.0.0.1` becomes `87.0.0.1`), while the connection is made through the operating system resolver, which on some platforms such as macOS reads it as decimal (`127.0.0.1`). A server at the connected address can then be authenticated with a certificate issued for another IP address. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
NodeJSnode22.23.3 – 22.23.3; 24.22.0 – 24.22.0; 26.12.0 – 26.12.0—No fix listedCNA
  • node VendorNodeJS Affected 22.23.3 – 22.23.3; 24.22.0 – 24.22.0; 26.12.0 – 26.12.0 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

The sources list no fixed version for Node.js. Red Hat fixes Red Hat Enterprise Linux AppStream (version 8) with RHSA-2026:92376 and AppStream (version 9) with RHSA-2026:92378. Red Hat lists Red Hat Enterprise Linux 8, 9 and 10 as affected with no fix plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Red Hat 2 advisories

  • RHSA-2026:92378 Released 2026-10-29 · Red Hat rating Important
    nodejs:24 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:24.22.1-3.module+el9.8.0+25216+afa2a4a4.aarch64::nodejs:24, nodejs-1:24.22.1-3.module+el9.8.0+25216+afa2a4a4.ppc64le::nodejs:24, nodejs-1:24.22.1-3.module+el9.8.0+25216+afa2a4a4.s390x::nodejs:24 +25
  • RHSA-2026:92376 Released 2026-10-29 · Red Hat rating Important
    nodejs:24 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:24.22.1-1.module+el8.10.0+25218+d9e131cb.aarch64::nodejs:24, nodejs-1:24.22.1-1.module+el8.10.0+25218+d9e131cb.ppc64le::nodejs:24, nodejs-1:24.22.1-1.module+el8.10.0+25218+d9e131cb.s390x::nodejs:24 +25

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:92376
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:92378
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-106069
  2. 2026-10-24 Priority changed: MEDIUM → LOW
  3. 2026-10-24 Affected versions changed · Red Hat
  4. 2026-10-24 CVSS score added · Red Hat
  5. 2026-10-30 Fix available: RHSA-2026:92378 · Red Hat
  6. 2026-10-30 Fix available: RHSA-2026:92376 · Red Hat
  7. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux AppStream (v. 9) · Red Hat
  8. 2026-11-02 CISA SSVC decision points changed

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