CVE-2016-8734
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.
Does this matter?
Lower severity and a low EPSS score (6.38%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.38% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- apache/subversion · debian/debian linux
- Source
- security@apache.org
EPSS 6.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-3932Third Party Advisory
- http://www.securityfocus.com/bid/94588Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037361Third Party Advisory, VDB Entry
- https://lists.apache.org/thread.html/7798f5cda1b2a3c70db4be77694b12dec8fcc1a441b00009d44f0e09%40%3Cannounce.apache.org%3E
- https://subversion.apache.org/security/CVE-2016-8734-advisory.txtIssue Tracking, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.html
- http://www.debian.org/security/2017/dsa-3932Third Party Advisory
- http://www.securityfocus.com/bid/94588Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037361Third Party Advisory, VDB Entry
- https://lists.apache.org/thread.html/7798f5cda1b2a3c70db4be77694b12dec8fcc1a441b00009d44f0e09%40%3Cannounce.apache.org%3E
- https://subversion.apache.org/security/CVE-2016-8734-advisory.txtIssue Tracking, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.