PT-2026-29037 · Node.Js+1 · Node.Js+1

Rafaelgss · Published 2026-01-01 · Updated 2026-04-13 · CVE-2026-21712

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Node.js (affected versions not specified)

Description A flaw in Node.js URL processing can lead to an assertion failure in native code when the url.format() function is invoked with a malformed internationalized domain name (IDN) containing invalid characters. This results in a crash of the Node.js process. The issue occurs when processing internationalized domain names with invalid characters. The vulnerable function is url.format().

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Assertion Failure

Weakness Enumeration

CWE-20

CWE-617

Related Identifiers

ALSA-2026:7350

ALSA-2026:7670

ALSA-2026:7675

BDU:2026-03558

BIT-NODE-2026-21712

BIT-NODE-MIN-2026-21712

CVE-2026-21712

OPENSUSE-SU-2026:10504-1

OPENSUSE-SU-2026:20519-1

RHSA-2026:7350

RHSA-2026:7670

RHSA-2026:7675

SUSE-SU-2026:1299-1

SUSE-SU-2026:21181-1

Affected Products

Node.Js

Rocky Linux

References · 94

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21712 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-node-2026-21712 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-7670.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-21712 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-21712 · Vendor Advisory
• https://errata.almalinux.org/10/ALSA-2026-7675.html · Vendor Advisory
• https://osv.dev/vulnerability/BIT-node-min-2026-21712 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21712 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:20519-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:7350 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-21712 · Vendor Advisory
• https://errata.almalinux.org/9/ALSA-2026-7350.html · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2026-7670.html · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:7670 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-7350.html · Vendor Advisory