CVE-2021-21299Published
Multiple Transfer-Encoding headers misinterprets request payload
Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
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CVE-2021-21299 · Microsoft / collected KEV context
cve-program · CVE-2021-21299
- https://portswigger.net/research/http-desync-attacks-request-smuggling-reborn
- https://rustsec.org/advisories/RUSTSEC-2021-0020.html
- https://github.com/hyperium/hyper/security/advisories/GHSA-6hfq-h8hq-87mf
- https://crates.io/crates/hyper
- https://github.com/hyperium/hyper/commit/8f93123efef5c1361086688fe4f34c83c89cec02
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.