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Vulnerabilities
Vulnerable Software

Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.026
EPSS Ranking 85.2%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 4.0
References
Products affected by CVE-2020-13943
  • Apache » Tomcat » Version: 10.0.0
    cpe:2.3:a:apache:tomcat:10.0.0
  • Apache » Tomcat » Version: 8.5.0
    cpe:2.3:a:apache:tomcat:8.5.0
  • Apache » Tomcat » Version: 8.5.1
    cpe:2.3:a:apache:tomcat:8.5.1
  • Apache » Tomcat » Version: 8.5.10
    cpe:2.3:a:apache:tomcat:8.5.10
  • Apache » Tomcat » Version: 8.5.11
    cpe:2.3:a:apache:tomcat:8.5.11
  • Apache » Tomcat » Version: 8.5.12
    cpe:2.3:a:apache:tomcat:8.5.12
  • Apache » Tomcat » Version: 8.5.13
    cpe:2.3:a:apache:tomcat:8.5.13
  • Apache » Tomcat » Version: 8.5.14
    cpe:2.3:a:apache:tomcat:8.5.14
  • Apache » Tomcat » Version: 8.5.15
    cpe:2.3:a:apache:tomcat:8.5.15
  • Apache » Tomcat » Version: 8.5.16
    cpe:2.3:a:apache:tomcat:8.5.16
  • Apache » Tomcat » Version: 8.5.17
    cpe:2.3:a:apache:tomcat:8.5.17
  • Apache » Tomcat » Version: 8.5.18
    cpe:2.3:a:apache:tomcat:8.5.18
  • Apache » Tomcat » Version: 8.5.19
    cpe:2.3:a:apache:tomcat:8.5.19
  • Apache » Tomcat » Version: 8.5.2
    cpe:2.3:a:apache:tomcat:8.5.2
  • Apache » Tomcat » Version: 8.5.20
    cpe:2.3:a:apache:tomcat:8.5.20
  • Apache » Tomcat » Version: 8.5.21
    cpe:2.3:a:apache:tomcat:8.5.21
  • Apache » Tomcat » Version: 8.5.22
    cpe:2.3:a:apache:tomcat:8.5.22
  • Apache » Tomcat » Version: 8.5.23
    cpe:2.3:a:apache:tomcat:8.5.23
  • Apache » Tomcat » Version: 8.5.24
    cpe:2.3:a:apache:tomcat:8.5.24
  • Apache » Tomcat » Version: 8.5.25
    cpe:2.3:a:apache:tomcat:8.5.25
  • Apache » Tomcat » Version: 8.5.26
    cpe:2.3:a:apache:tomcat:8.5.26
  • Apache » Tomcat » Version: 8.5.27
    cpe:2.3:a:apache:tomcat:8.5.27
  • Apache » Tomcat » Version: 8.5.28
    cpe:2.3:a:apache:tomcat:8.5.28
  • Apache » Tomcat » Version: 8.5.29
    cpe:2.3:a:apache:tomcat:8.5.29
  • Apache » Tomcat » Version: 8.5.3
    cpe:2.3:a:apache:tomcat:8.5.3
  • Apache » Tomcat » Version: 8.5.30
    cpe:2.3:a:apache:tomcat:8.5.30
  • Apache » Tomcat » Version: 8.5.31
    cpe:2.3:a:apache:tomcat:8.5.31
  • Apache » Tomcat » Version: 8.5.32
    cpe:2.3:a:apache:tomcat:8.5.32
  • Apache » Tomcat » Version: 8.5.33
    cpe:2.3:a:apache:tomcat:8.5.33
  • Apache » Tomcat » Version: 8.5.34
    cpe:2.3:a:apache:tomcat:8.5.34
  • Apache » Tomcat » Version: 8.5.35
    cpe:2.3:a:apache:tomcat:8.5.35
  • Apache » Tomcat » Version: 8.5.36
    cpe:2.3:a:apache:tomcat:8.5.36
  • Apache » Tomcat » Version: 8.5.37
    cpe:2.3:a:apache:tomcat:8.5.37
  • Apache » Tomcat » Version: 8.5.38
    cpe:2.3:a:apache:tomcat:8.5.38
  • Apache » Tomcat » Version: 8.5.39
    cpe:2.3:a:apache:tomcat:8.5.39
  • Apache » Tomcat » Version: 8.5.4
    cpe:2.3:a:apache:tomcat:8.5.4
  • Apache » Tomcat » Version: 8.5.40
    cpe:2.3:a:apache:tomcat:8.5.40
  • Apache » Tomcat » Version: 8.5.41
    cpe:2.3:a:apache:tomcat:8.5.41
  • Apache » Tomcat » Version: 8.5.42
    cpe:2.3:a:apache:tomcat:8.5.42
  • Apache » Tomcat » Version: 8.5.43
    cpe:2.3:a:apache:tomcat:8.5.43
  • Apache » Tomcat » Version: 8.5.44
    cpe:2.3:a:apache:tomcat:8.5.44
  • Apache » Tomcat » Version: 8.5.45
    cpe:2.3:a:apache:tomcat:8.5.45
  • Apache » Tomcat » Version: 8.5.46
    cpe:2.3:a:apache:tomcat:8.5.46
  • Apache » Tomcat » Version: 8.5.47
    cpe:2.3:a:apache:tomcat:8.5.47
  • Apache » Tomcat » Version: 8.5.48
    cpe:2.3:a:apache:tomcat:8.5.48
  • Apache » Tomcat » Version: 8.5.49
    cpe:2.3:a:apache:tomcat:8.5.49
  • Apache » Tomcat » Version: 8.5.5
    cpe:2.3:a:apache:tomcat:8.5.5
  • Apache » Tomcat » Version: 8.5.50
    cpe:2.3:a:apache:tomcat:8.5.50
  • Apache » Tomcat » Version: 8.5.51
    cpe:2.3:a:apache:tomcat:8.5.51
  • Apache » Tomcat » Version: 8.5.52
    cpe:2.3:a:apache:tomcat:8.5.52
  • Apache » Tomcat » Version: 8.5.53
    cpe:2.3:a:apache:tomcat:8.5.53
  • Apache » Tomcat » Version: 8.5.54
    cpe:2.3:a:apache:tomcat:8.5.54
  • Apache » Tomcat » Version: 8.5.55
    cpe:2.3:a:apache:tomcat:8.5.55
  • Apache » Tomcat » Version: 8.5.56
    cpe:2.3:a:apache:tomcat:8.5.56
  • Apache » Tomcat » Version: 8.5.57
    cpe:2.3:a:apache:tomcat:8.5.57
  • Apache » Tomcat » Version: 8.5.6
    cpe:2.3:a:apache:tomcat:8.5.6
  • Apache » Tomcat » Version: 8.5.7
    cpe:2.3:a:apache:tomcat:8.5.7
  • Apache » Tomcat » Version: 8.5.8
    cpe:2.3:a:apache:tomcat:8.5.8
  • Apache » Tomcat » Version: 8.5.9
    cpe:2.3:a:apache:tomcat:8.5.9
  • Apache » Tomcat » Version: 9.0.0
    cpe:2.3:a:apache:tomcat:9.0.0
  • Apache » Tomcat » Version: 9.0.1
    cpe:2.3:a:apache:tomcat:9.0.1
  • Apache » Tomcat » Version: 9.0.10
    cpe:2.3:a:apache:tomcat:9.0.10
  • Apache » Tomcat » Version: 9.0.11
    cpe:2.3:a:apache:tomcat:9.0.11
  • Apache » Tomcat » Version: 9.0.12
    cpe:2.3:a:apache:tomcat:9.0.12
  • Apache » Tomcat » Version: 9.0.13
    cpe:2.3:a:apache:tomcat:9.0.13
  • Apache » Tomcat » Version: 9.0.14
    cpe:2.3:a:apache:tomcat:9.0.14
  • Apache » Tomcat » Version: 9.0.15
    cpe:2.3:a:apache:tomcat:9.0.15
  • Apache » Tomcat » Version: 9.0.16
    cpe:2.3:a:apache:tomcat:9.0.16
  • Apache » Tomcat » Version: 9.0.17
    cpe:2.3:a:apache:tomcat:9.0.17
  • Apache » Tomcat » Version: 9.0.18
    cpe:2.3:a:apache:tomcat:9.0.18
  • Apache » Tomcat » Version: 9.0.19
    cpe:2.3:a:apache:tomcat:9.0.19
  • Apache » Tomcat » Version: 9.0.2
    cpe:2.3:a:apache:tomcat:9.0.2
  • Apache » Tomcat » Version: 9.0.20
    cpe:2.3:a:apache:tomcat:9.0.20
  • Apache » Tomcat » Version: 9.0.21
    cpe:2.3:a:apache:tomcat:9.0.21
  • Apache » Tomcat » Version: 9.0.22
    cpe:2.3:a:apache:tomcat:9.0.22
  • Apache » Tomcat » Version: 9.0.23
    cpe:2.3:a:apache:tomcat:9.0.23
  • Apache » Tomcat » Version: 9.0.24
    cpe:2.3:a:apache:tomcat:9.0.24
  • Apache » Tomcat » Version: 9.0.25
    cpe:2.3:a:apache:tomcat:9.0.25
  • Apache » Tomcat » Version: 9.0.26
    cpe:2.3:a:apache:tomcat:9.0.26
  • Apache » Tomcat » Version: 9.0.27
    cpe:2.3:a:apache:tomcat:9.0.27
  • Apache » Tomcat » Version: 9.0.28
    cpe:2.3:a:apache:tomcat:9.0.28
  • Apache » Tomcat » Version: 9.0.29
    cpe:2.3:a:apache:tomcat:9.0.29
  • Apache » Tomcat » Version: 9.0.3
    cpe:2.3:a:apache:tomcat:9.0.3
  • Apache » Tomcat » Version: 9.0.30
    cpe:2.3:a:apache:tomcat:9.0.30
  • Apache » Tomcat » Version: 9.0.31
    cpe:2.3:a:apache:tomcat:9.0.31
  • Apache » Tomcat » Version: 9.0.32
    cpe:2.3:a:apache:tomcat:9.0.32
  • Apache » Tomcat » Version: 9.0.33
    cpe:2.3:a:apache:tomcat:9.0.33
  • Apache » Tomcat » Version: 9.0.34
    cpe:2.3:a:apache:tomcat:9.0.34
  • Apache » Tomcat » Version: 9.0.35
    cpe:2.3:a:apache:tomcat:9.0.35
  • Apache » Tomcat » Version: 9.0.36
    cpe:2.3:a:apache:tomcat:9.0.36
  • Apache » Tomcat » Version: 9.0.37
    cpe:2.3:a:apache:tomcat:9.0.37
  • Apache » Tomcat » Version: 9.0.4
    cpe:2.3:a:apache:tomcat:9.0.4
  • Apache » Tomcat » Version: 9.0.5
    cpe:2.3:a:apache:tomcat:9.0.5
  • Apache » Tomcat » Version: 9.0.6
    cpe:2.3:a:apache:tomcat:9.0.6
  • Apache » Tomcat » Version: 9.0.7
    cpe:2.3:a:apache:tomcat:9.0.7
  • Apache » Tomcat » Version: 9.0.8
    cpe:2.3:a:apache:tomcat:9.0.8
  • Apache » Tomcat » Version: 9.0.9
    cpe:2.3:a:apache:tomcat:9.0.9
  • Oracle » Instantis Enterprisetrack » Version: 17.1
    cpe:2.3:a:oracle:instantis_enterprisetrack:17.1
  • Oracle » Instantis Enterprisetrack » Version: 17.2
    cpe:2.3:a:oracle:instantis_enterprisetrack:17.2
  • Oracle » Instantis Enterprisetrack » Version: 17.3
    cpe:2.3:a:oracle:instantis_enterprisetrack:17.3
  • Oracle » Sd-Wan Edge » Version: 9.0
    cpe:2.3:a:oracle:sd-wan_edge:9.0
  • Debian » Debian Linux » Version: 10.0
    cpe:2.3:o:debian:debian_linux:10.0
  • Debian » Debian Linux » Version: 9.0
    cpe:2.3:o:debian:debian_linux:9.0


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