CVE-2016-2167

Name: CVE-2016-2167
Creator: NVD / NIST
Published: 2016-05-05T18:59:00.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.87%

Last modified Jun 17, 2026

CVE-2016-2167 is a vulnerability of currently unknown severity. The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.. EPSS estimates a 6.87% chance of exploitation in the next 30 days.

Description

The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.

Metrics

EPSS Probability

6.87%

93.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Apache	Subversion	<= 1.8.15
Apache	Subversion	1.9.0
Apache	Subversion	1.9.1
Apache	Subversion	1.9.2
Apache	Subversion	1.9.3

References

Timeline

Published: May 5, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-2167?

How severe is CVE-2016-2167?

Severity scoring for CVE-2016-2167 is pending analysis. The EPSS model estimates a 6.87% probability of exploitation in the next 30 days.

How do I fix CVE-2016-2167?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-2167?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST