CVE-2016-8734

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-16 · updated 2026-06-17
Weakness: CWE-400

Description

Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.

Affected products

Apache Software Foundation Apache Subversion: 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5 (+76)
Debian Linux: 8.0, 9.0

References

http://www.debian.org/security/2017/dsa-3932
http://www.securityfocus.com/bid/94588
http://www.securitytracker.com/id/1037361
https://lists.apache.org/thread.html/7798f5cda1b2a3c70db4be77694b12dec8fcc1a441b00009d44f0e09%40%3Cannounce.apache.org%3E
https://subversion.apache.org/security/CVE-2016-8734-advisory.txt
https://www.oracle.com/security-alerts/cpuoct2020.html
http://www.debian.org/security/2017/dsa-3932
http://www.securityfocus.com/bid/94588
http://www.securitytracker.com/id/1037361
https://lists.apache.org/thread.html/7798f5cda1b2a3c70db4be77694b12dec8fcc1a441b00009d44f0e09%40%3Cannounce.apache.org%3E
https://subversion.apache.org/security/CVE-2016-8734-advisory.txt
https://www.oracle.com/security-alerts/cpuoct2020.html

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