https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2026-33490.htmlhttps://patchthecve.com/cve/CVE-2026-33490.htmlWed, 17 Jun 2026 10:37:35 +0000LOW 3.7: H3 is a minimal H(TTP) framework. In versions 2.0.0-0 through 2.0.1-rc.16, the `mount()` method in h3 uses a simple `startsWith()` check to determine whether incoming requests fall under a mounted sub-application's path prefix. Because this check does not verify a path segment boundary (i.e., that thttps://patchthecve.com/cve/CVE-2026-33131.htmlhttps://patchthecve.com/cve/CVE-2026-33131.htmlWed, 17 Jun 2026 10:36:59 +0000HIGH 7.4: H3 is a minimal H(TTP) 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 _uhttps://patchthecve.com/cve/CVE-2026-33129.htmlhttps://patchthecve.com/cve/CVE-2026-33129.htmlWed, 17 Jun 2026 10:36:59 +0000MEDIUM 5.9: H3 is a minimal H(TTP) 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 servehttps://patchthecve.com/cve/CVE-2026-33128.htmlhttps://patchthecve.com/cve/CVE-2026-33128.htmlWed, 17 Jun 2026 10:36:59 +0000HIGH 7.5: H3 is a minimal H(TTP) 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 pa