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CVE Watch8 de out. de 2026

CVE-2020-13943

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 nu

CVSS

4.3

Média

EPSS

52.6%

p99

KEV

—

Exploit Today

30

0-100

Publicado: 12 de out. de 2020 · Última mod.: 8 de out. de 2026

EPSS · 30d
52.6%EPSS · 30 dias55.0%
2026-10-082026-11-05
Descrição técnica

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.

Referências oficiais
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