CVE Watch8 oct 2026

CVE-2020-17527

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-u

CVSS

7.5

Alto

EPSS

24.6%

p98

KEV

—

Exploit Today

0-100

Publicado: 3 dic 2020 · Última mod.: 8 oct 2026 · CWE-200

EPSS · 30d

24.6%EPSS · 30 días24.6%

2026-09-242026-10-23

Descripción técnica

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

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