The following table lists the changes that have been made to the
CVE-2025-43859 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.
Apr. 24, 2025
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Description | h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11’s parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue. | |
| Added | CVSS V3.1 | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | |
| Added | CWE | CWE-444 | |
| Added | Reference | https://github.com/python-hyper/h11/commit/114803a29ce50116dc47951c690ad4892b1a36ed | |
| Added | Reference | https://github.com/python-hyper/h11/security/advisories/GHSA-vqfr-h8mv-ghfj |
CVE ID : CVE-2025-10304 Published : Dec. 3, 2025, 3:27 a.m. | 26 minutes ago Description : The Everest Backup –
CVE ID : CVE-2025-12585 Published : Dec. 3, 2025, 3:27 a.m. | 26 minutes ago Description : The MxChat – AI
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