CVE-2026-48930: nodejs node Improper Access Control
Vulnerability summary
CVE-2026-48930 is a critical (CVSS 9.8) Improper Access Control vulnerability in nodejs node. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24.4% of scored vulnerabilities.
Not severe (CVSS 5.6, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 28 · Related 14Timeline
- 26-06-2026PublishedVulnerability first disclosed.
- 26-06-2026Last modifiedVulnerability information updated.
Description
A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
CVSS metrics
7 scores · 5 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated5.6MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVDNIST5.6MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.32% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- nodejs< 22.23.0-r0 | < 24.17.0-r0
Debian1 product
- nodejs< 18.20.4+dfsg-1~deb12u3 | < 20.19.2+dfsg-1+deb13u3 | < 24.17.0+dfsg+~cs24.13.2-1
Ubuntu1 product
- nodejsAll versions (No fix recorded)
4 vendors · 5 products
