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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2407-1 | tomcat8 security update |
Debian DSA |
DSA-4835-1 | tomcat9 security update |
EUVD |
EUVD-2022-0967 | 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. |
Github GHSA |
GHSA-f268-65qc-98vg | Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat |
Ubuntu USN |
USN-5360-1 | Tomcat vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 12 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2024-08-04T12:32:14.470Z
Reserved: 2020-06-08T00:00:00
Link: CVE-2020-13943
No data.
Status : Modified
Published: 2020-10-12T14:15:12.183
Modified: 2024-11-21T05:02:11.967
Link: CVE-2020-13943
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Github GHSA
Ubuntu USN