Metrics
Affected Vendors & Products
Tue, 26 Aug 2025 20:15:00 +0000
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Metrics |
ssvc
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Tue, 26 Aug 2025 12:30:00 +0000
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References |
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Metrics |
threat_severity
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cvssV3_1
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Tue, 26 Aug 2025 09:00:00 +0000
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First Time appeared |
Hyper
Hyper h2 |
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Vendors & Products |
Hyper
Hyper h2 |
Mon, 25 Aug 2025 21:45:00 +0000
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Description | h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without properly validating header names/values, enabling attackers to manipulate request boundaries and bypass security controls. This issue has been patched in version 4.3.0. | |
Title | h2 allows HTTP Request Smuggling due to illegal characters in headers | |
Weaknesses | CWE-93 | |
References |
| |
Metrics |
cvssV4_0
|

Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-08-26T19:14:49.643Z
Reserved: 2025-08-20T14:30:35.009Z
Link: CVE-2025-57804

Updated: 2025-08-26T19:14:23.223Z

Status : Awaiting Analysis
Published: 2025-08-25T21:15:37.983
Modified: 2025-08-26T13:41:58.950
Link: CVE-2025-57804


Updated: 2025-08-26T08:54:54Z