Vulnerability · Published Oct 23, 2026 · Assigned by hackerone
CVE-2026-105482
High 7.4
In plain English
A high-severity improper access control in node from nodejs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
A flaw in Node.js DNS resolution allows hostnames containing a NUL byte to be silently truncated by the dns.resolve*() functions and dns.reverse(). This is an incomplete fix of CVE-2026-48930, which only covered dns.lookup() and the net/tls host options. Because the name is passed to c-ares as a C string, resolving attacker.example\0.trusted.example queries attacker.example and returns its records without any error. Applications that validate a hostname, for example against a domain allowlist, and then resolve it with dns.resolve*() can act on records for a different name than the one they validated. This vulnerability affects Node.js 26.x, 24.x, and 22.x.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | nodejs | 1:24.22.1-1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs | 1:24.22.1-3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-devel | 1:24.22.1-1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-devel | 1:24.22.1-3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-docs | 1:24.22.1-1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-docs | 1:24.22.1-3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-full-i18n | 1:24.22.1-1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-full-i18n | 1:24.22.1-3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-libs | 1:24.22.1-1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-libs | 1:24.22.1-3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-nodemon | 3.1.14-2.module_el8.10.0+4250+09238ed4 | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-nodemon | 3.1.14-3.module_el9.8.0+292+f4eaf8b2 | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-packaging | 2021.06-6.module_el8.10.0+4086+70facd4a | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-packaging | 2021.06-6.module_el9.7.0+209+ecf6523e | ALSA-2026:92378 |
| AlmaLinux:8 | nodejs-packaging-bundler | 2021.06-6.module_el8.10.0+4086+70facd4a | ALSA-2026:92376 |
| AlmaLinux:9 | nodejs-packaging-bundler | 2021.06-6.module_el9.7.0+209+ecf6523e | ALSA-2026:92378 |
| AlmaLinux:8 | npm | 1:11.19.1-1.24.22.1.1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | npm | 1:11.19.1-1.24.22.1.3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| AlmaLinux:8 | v8-13.6-devel | 3:13.6.233.17-1.24.22.1.1.module_el8.10.0+4331+0683c9c1 | ALSA-2026:92376 |
| AlmaLinux:9 | v8-13.6-devel | 3:13.6.233.17-1.24.22.1.3.module_el9.8.0+333+788f3075 | ALSA-2026:92378 |
| Alpine:v3.21 | nodejs | 22.23.4-r0 | ALPINE-CVE-2026-105482 |
| Alpine:v3.22 | nodejs | 22.23.4-r0 | ALPINE-CVE-2026-105482 |
| Alpine:v3.23 | nodejs | 24.22.1-r0 | ALPINE-CVE-2026-105482 |
| Alpine:v3.24 | nodejs | 24.22.1-r0 | ALPINE-CVE-2026-105482 |
| Alpine:v3.24 | nodejs-current | 26.12.1-r0 | ALPINE-CVE-2026-105482 |
| Debian:12 | nodejs | no fix listed | DEBIAN-CVE-2026-105482 |
| Debian:13 | nodejs | no fix listed | DEBIAN-CVE-2026-105482 |
| Debian:14 | nodejs | no fix listed | DEBIAN-CVE-2026-105482 |
| Rocky Linux:9 | nodejs | 1:24.22.1-3.module+el9.8.0+40401+e24b8c95 | RLSA-2026:92378 |
| Rocky Linux:8 | nodejs-nodemon | 0:3.1.14-2.module+el8.10.0+40277+b1b3f89e | RLSA-2026:92376 |
| Rocky Linux:8 | nodejs-nodemon | 0:3.1.14-2.module+el8.10.0+40278+50b003a3 | RLSA-2026:92376 |
| Rocky Linux:9 | nodejs-nodemon | 0:3.1.14-3.module+el9.8.0+40281+14cc6568 | RLSA-2026:92378 |
| Rocky Linux:8 | nodejs-packaging | 0:2021.06-6.module+el8.10.0+40048+6d99f608 | RLSA-2026:92376 |
| Rocky Linux:8 | nodejs-packaging | 0:2021.06-6.module+el8.10.0+40172+38f6fdd1 | RLSA-2026:92376 |
| Rocky Linux:8 | nodejs-packaging | 0:2021.06-6.module+el8.10.0+40171+8fa9c325 | RLSA-2026:92376 |
| Rocky Linux:9 | nodejs-packaging | 0:2021.06-6.module+el9.7.0+40165+d075e3f2 | RLSA-2026:92378 |
| Rocky Linux:9 | nodejs-packaging | 0:2021.06-6.module+el9.7.0+40052+e32ea525 | RLSA-2026:92378 |
| Rocky Linux:9 | nodejs-packaging | 0:2021.06-6.module+el9.8.0+40164+8921ab53 | RLSA-2026:92378 |
| Rocky Linux:9 | nodejs-packaging | 0:2021.06-6.module+el9.7.0+40153+4d595597 | RLSA-2026:92378 |
| Ubuntu:24.04:LTS | nodejs | no fix listed | UBUNTU-CVE-2026-105482 |
| Ubuntu:26.04:LTS | nodejs | no fix listed | UBUNTU-CVE-2026-105482 |
| Ubuntu:26.10 | nodejs | no fix listed | UBUNTU-CVE-2026-105482 |
Affected products (as reported)
Weakness: CWE-284 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N