CVE-2021-33037
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Incorrect Transfer-Encoding handling with HTTP/1.0
Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Apache Tomcat
- Vendor
- Apache Software Foundation
- Product
- Apache Tomcat
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| Apache Tomcat 10 10.0.0-M1 to 10.0.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Apache Tomcat 9 9.0.0.M1 to 9.0.46 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Apache Tomcat 8 8.5.0 to 8.5.66 | affected | Unavailable | Unavailable | Unavailable | None listed |