CVE-2020-13943
- State
- Published
- Severity
- Not scored
- Published
- Oct 12, 2020
- Updated
- Oct 8, 2026
- Reserved
- Jun 8, 2020
Description
If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
Apache Tomcatn/a |
|
References
- https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E
- [debian-lts-announce] 20201014 [SECURITY] [DLA 2407-1] tomcat8 security updatemailing-list
- openSUSE-SU-2020:1799vendor-advisory
- openSUSE-SU-2020:1842vendor-advisory
- DSA-4835vendor-advisory
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://security.netapp.com/advisory/ntap-20201016-0007/
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.