CVE-2026-48930Disclosure(nodejs / node.js)

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Patch nodejs node.js systems immediately
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD 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**.

nodejs CVEs Back to dashboard

2.0/ 10 priority

Sources & remediation

Patch / fix

https://nodejs.org/en/blog/vulnerability/june-2026-security-releases

Weakness type (CWE)

CWE-284

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

node.js

Threat summary

Public PoC is present in monitored signal
Patch or workaround signal is available
4 mentions across 4 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Patch or workaround mentioned in 1 signal
Technical details provided in 3 signals
Disclosure: 3 classified signals
General: 1 classified signal
Peaked 3d ago at 1 mentions (2026-06-26); latest day: 1
4 total mentions across 4 days

Affected systems

Vendors

nodejs

Products

node.js

3 versions affected across 1 product

Deep dive

Activity timeline4 mentions / 4d

Signal classification2 categories

Disclosure

375.0%

General

125.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-06-26	1	Disclosure1
2026-06-27	1	Disclosure1
2026-06-29	1	Disclosure1
2026-07-24	1	General1

Full discourse4 posts

SecAlerts@SecAlertsCo90d
Disclosure
🔗 Node.js TLS flaw: embedded null bytes in hostnames silently rebind authority via C-string truncation in resolver bindings. All supported versions affected. CVE-2026-48930 (CVSS 9.8) - patch now. https://secalerts.co/vulnerability/CVE-2026-48930?utm_campaign=x https://t.co/8cu054U3FM
Post summary
The tweet discloses a critical Node.js TLS flaw (CVE-2026-48930) with a CVSS of 9.8 and indicates that a patch is now available.
01000129
845 followersView on X
takenaka hiroya@Joe_Biden_ja63d
General
掲載済みの脆弱性情報を更新しました。常に最新の脅威に対応できるよう、CISA KEVカタログとの突合結果を反映し、レビューノートを追加しています。 https://cve.autoarticles.net/cve/CVE-2026-48930
Post summary
The post updates CVE-2026-48930 by noting cross‑matching with the CISA KEV catalog and adding review notes, but it does not provide PoC, exploit, patch, or technical details.
0000048
561 followersView on X
ThreatAft@ThreatAft88d
Disclosure
🚨 CRITICAL: CVE-2026-48930 — Node.js TLS Hostname Truncation CVSS 9.8 (NVD). NUL byte injection causes hostname truncation → authority rebinding → TLS impersonation. Affects Node.js 22.x, 24.x, 26.x. 🔗 https://threataft.com/articles/cve-2026-48930-nodejs-tls-hostname-truncation-authority-rebinding #CyberSecurity #ThreatIntel #infosec #nodejs
Post summary
A critical Node.js TLS hostname truncation vulnerability (CVE‑2026‑48930) is disclosed, detailing NUL byte injection leading to TLS impersonation and affecting Node.js 22.x, 24.x, and 26.x.
0000077
31 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds91d
Disclosure
CVE-2026-48930 Embedded-Nul Hostname TLS Vulnerability in Node.js 22, 24, and 26 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-48930
Post summary
The text announces a new Node.js TLS vulnerability (CVE‑2026‑48930) affecting versions 22, 24, and 26, providing basic technical details but no PoC, exploit code, exploitation evidence, or patch information.
00000113
4.1K followersView on X

CPE platform detail3 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

3 of 3 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	nodejs	node.js	22.22.3	-	-
App	nodejs	node.js	24.16.0	-	-
App	nodejs	node.js	26.3.0	-	-

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What researchers are saying

CVE-2026-48930

SecAlerts@SecAlertsCoDisclosure

The tweet discloses a critical Node.js TLS flaw (CVE-2026-48930) with a CVSS of 9.8 and indicates that a patch is now available.

takenaka hiroya@Joe_Biden_jaGeneral

The post updates CVE-2026-48930 by noting cross‑matching with the CISA KEV catalog and adding review notes, but it does not provide PoC, exploit, patch, or technical details.

ThreatAft@ThreatAftDisclosure

A critical Node.js TLS hostname truncation vulnerability (CVE‑2026‑48930) is disclosed, detailing NUL byte injection leading to TLS impersonation and affecting Node.js 22.x, 24.x, and 26.x.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The text announces a new Node.js TLS vulnerability (CVE‑2026‑48930) affecting versions 22, 24, and 26, providing basic technical details but no PoC, exploit code, exploitation evidence, or patch information.