CVE-2025-43859
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-43859
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-43859.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-43859
- Aliases
- Downstream
- Related
- Published
- 2025-04-24T19:15:47Z
- Modified
- 2025-09-24T03:19:06.928785Z
- Summary
- [none]
- Details
-
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.
- References