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CVE-2016-8734

25
FAUCET Score

CVE-2016-8734 describes a denial-of-service vulnerability in Apache Subversion's mod_dontdothat module and HTTP clients versions 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4. This medium-severity vulnerability (CVSS 6.5) stems from exponential XML entity expansion, allowing an attacker to cause excessive CPU or memory consumption. The attack requires low privileges and network access, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.0CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.0:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.1:*:*:*:*:*:*:*
1.4.2CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.2:*:*:*:*:*:*:*
1.4.3CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.3:*:*:*:*:*:*:*
1.4.4CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.38%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0638 is in the 98th percentile among its peer group of 21,924 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: subversion

Vendor Advisories (1)

redhatCVE-2016-8734Moderate

subversion: unrestricted XML entity expansion in mod_dontdothat and Subversion clients using http(s)://

Nov 29, 2016

References

lists.apache.org / thread.html/7798f5cda1b2a3c70db4be77694b12dec8fcc1a441b00009d44f0e09%40%3Cannounce.apache.org%3E
subversion.apache.org / security/CVE-2016-8734-advisory.txt
Issue TrackingVendor Advisory
oracle.com / security-alerts/cpuoct2020.html
debian.org / security/2017/dsa-3932
Third Party Advisory
securityfocus.com / bid/94588
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037361
Third Party AdvisoryVDB Entry