CVE catalog
CVE-2026-21712
A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing t
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.32% · Oct 25, 2026
A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing the Node.js process.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | nodejs | sid | 24.22.1+dfsg+~cs24.19.2-1 | not affected |
| Debian | nodejs | forky | 24.21.0+dfsg+~cs24.13.4-1 | not affected |
| Debian | nodejs | trixie | 20.19.2+dfsg-1+deb13u2 | not affected |
| Debian | nodejs | trixie-security | 20.19.2+dfsg-1+deb13u3 | not affected |
| Debian | nodejs | bookworm | 18.20.4+dfsg-1~deb12u2 | not affected |
| Debian | nodejs | bookworm-security | 18.20.4+dfsg-1~deb12u3 | not affected |
| Cpe | nodejs | Not reported | Not reported | not affected |
| Cpe | node.js | Not reported | Not reported | unknown |
| Alpine | nodejs | 3.23 | 24.14.1-r0 | fixed |
| Alpine | nodejs | 3.24 | 24.14.1-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | nodejs | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | nodejs | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | nodejs | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | nodejs | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Alpine | nodejs | apk | 3.23 | 24.14.1-r0 | Not reported | ALPINE-CVE-2026-21712 | Not reported |
| Alpine | nodejs | apk | 3.24 | 24.14.1-r0 | Not reported | ALPINE-CVE-2026-21712 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-21712]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-21712]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-21712]
- [https://security-tracker.debian.org/tracker/CVE-2026-21712]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21712.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0843.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]