CVE-2026-33128

A flaw was found in H3, a minimal HTTP framework. A remote attacker can exploit this flaw by injecting malicious Server-Sent Events SSE due to improper sanitization of newline characters in the formatEventStreamMessage and formatEventStreamComment functions. An attacker who controls any part of a...

CVE-2026-33131

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

CVE-2026-33131

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

CVE-2026-33131

CVE-2026-33131 affects H3, a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 expose a Host header spoofing flaw in the NodeRequestUrl/FastURL path, enabling middleware bypass when an attacker manipulates event.url properties (e.g., via Host header) so route matching succeeds but auth...

CVE-2026-33131 h3 has a middleware bypass with one gadget

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

CVE-2026-33131 h3 has a middleware bypass with one gadget

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

CVE-2026-33131 h3 has a middleware bypass with one gadget

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

CVE-2026-33129

H3 is a minimal HTTP framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison !==. This allows an attacker to deduce the valid password character-by-character by measuring the server...

CVE-2026-33129 h3 has an observable timing discrepancy in basic auth utils

H3 is a minimal HTTP framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison !==. This allows an attacker to deduce the valid password character-by-character by measuring the server...

CVE-2026-33129 h3 has an observable timing discrepancy in basic auth utils

H3 is a minimal HTTP framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison !==. This allows an attacker to deduce the valid password character-by-character by measuring the server...

CVE-2026-33128

H3 is a minimal HTTP framework. In versions prior to 1.15.6 and between 2.0.0 through 2.0.1-rc.14, createEventStream is vulnerable to Server-Sent Events SSE injection due to missing newline sanitization in formatEventStreamMessage and formatEventStreamComment. An attacker who controls any part of...

CVE-2026-33128 h3 has a Server-Sent Events Injection via Unsanitized Newlines in Event Stream Fields

H3 is a minimal HTTP framework. In versions prior to 1.15.6 and between 2.0.0 through 2.0.1-rc.14, createEventStream is vulnerable to Server-Sent Events SSE injection due to missing newline sanitization in formatEventStreamMessage and formatEventStreamComment. An attacker who controls any part of...

CVE-2026-33128: Improper Neutralization of CRLF Sequences

H3 is a minimal HTTP framework. In versions prior to 1.15.6 and between 2.0.0 through 2.0.1-rc.14, createEventStream is vulnerable to Server-Sent Events SSE injection due to missing newline sanitization in formatEventStreamMessage and formatEventStreamComment. An attacker who controls any part of...

H3 安全漏洞

H3 is an open-source HTTP framework developed by H3. Versions of H3 from 2.0.1-beta.0 to 2.0.0-rc.8 contain security vulnerabilities. These vulnerabilities stem from the use of insecure string comparisons in the requireBasicAuth function, which may lead to timing side-channel attacks...

CVE-2026-33131: Authentication Bypass by Spoofing

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

H3 安全漏洞

H3 is an open-source HTTP framework developed by H3. Versions 2.0.0-0 to 2.0.1-rc.14 of H3 contain security vulnerabilities. These vulnerabilities stem from a Host header spoofing issue in NodeRequestUrl, which may allow middleware to bypass security checks...

CVE-2026-33129: Observable Timing Discrepancy

H3 is a minimal HTTP framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison !==. This allows an attacker to deduce the valid password character-by-character by measuring the server...

@adpush/start (>=1.87.14, <=1.87.16), @akkuma/vinxi (0.3.12) +220 more potentially affected by CVE-2026-86253 via h3 (>=1.0.1, <=1.15.5)

h3 NPM version =1.0.1, =1.87.14, =1.0.7, =1.0.0, =1.5.0, =1.0.0, =0.8.16-canary.v20250123185645, =8.3.3, =3.1.0, =0.0.11, =3.1.0-0, =3.2.0 - @enrypase/solidstart-endpoint 0.1.0 and more Source cves: CVE-2026-86253 Source advisory: OSV:GHSA-WR4H-V87W-P3R7...

Directory Traversal

Overview h3 is a Minimal HTTP framework built for high performance and portability. Affected versions of this package are vulnerable to Directory Traversal via the serveStatic function. An attacker can access arbitrary files outside the intended static directory by sending crafted HTTP requests...

@adpush/start (>=1.87.14, <=1.87.16), @akkuma/vinxi (0.3.12) +220 more potentially affected by unknown CVE via h3 (>=1.0.1, <=1.15.5)

h3 NPM version =1.0.1, =1.87.14, =1.0.7, =1.0.0, =1.5.0, =1.0.0, =0.8.16-canary.v20250123185645, =8.3.3, =3.1.0, =0.0.11, =3.1.0-0, =3.2.0 - @enrypase/solidstart-endpoint 0.1.0 and more Source cves: unknown CVE Source advisory: SNYK:JS-H3-15683856...