CVE-2020-13943

MediumCVSS 4.3/10Last modified Oct 8, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published
Oct 12, 2020
Last modified
Oct 8, 2026
NVD status
Modified

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CVE-2020-13943: Medium severity, CVSS 4.3 | Vulnix