CVE-2016-8747

Apache Tomcat allows remote attackers to read data that was intended to be associated with a different request

7.5 HighFix available

An information disclosure issue was discovered in Apache Tomcat 8.5.7 to 8.5.9 and 9.0.0.M11 to 9.0.0.M15 in reverse-proxy configurations. Http11InputBuffer.java allows remote attackers to read data that was intended to be associated with a different request.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

7.12%Up 3.4 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-8747
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE List 7.5

Record: CVE-2016-8747
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

EUVDEUVD-2022-3801 7.5

Record: EUVD-2022-3801
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fjwp-r6fm-q6qw 7.5

Apache Tomcat allows remote attackers to read data that was intended to be associated with a different request

Record: GHSA-fjwp-r6fm-q6qw
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSV 7.5

Record: CVE-2016-8747
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVGHSA-fjwp-r6fm-q6qw 7.5

Apache Tomcat allows remote attackers to read data that was intended to be associated with a different request

Record: GHSA-fjwp-r6fm-q6qw
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.apache.tomcat:tomcat` Maven	8.5.7 to 8.5.9	8.5.10
`org.apache.tomcat:tomcat` Maven	9.0.0.M11 to 9.0.0.M15	9.0.0.M16
`org.apache.tomcat:tomcat` Maven	8.5.7 up to 8.5.10, plus listed versions 8.5.88.5.9	8.5.10
`org.apache.tomcat:tomcat` Maven	9.0.0.M11 up to 9.0.0.M16, plus listed versions 9.0.0.M139.0.0.M15	9.0.0.M16

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-8747 is a high vulnerability (CVSS 7.5) in Apache Tomcat, published March 14, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.12%, the 94th percentile. Fixed in org.apache.tomcat:tomcat 8.5.10.

References

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