CVE-2016-2167: n/a vulnerability

CVE-2016-2167: The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x be...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 23:17 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw can let a remote user authenticate to an Apache Subversion server and reach repositories they should not access, but only when svnserve uses Cyrus SASL authentication and realm strings are configured in the vulnerable pattern. Exposure is most likely on self-hosted Apache Subversion svnserve deployments using Cyrus SASL authentication, especially where repository realms share prefixes. Standard deployments not using Cyrus SASL for svnserve are not described as affected in the bundle. Prioritize remediation for internet-accessible or partner-accessible Subversion servers using Cyrus SASL. The business risk is unauthorized source-code or repository access, but available evidence does not show active exploitation. Mitigation focus: Upgrade Apache Subversion to 1.8.16, 1.9.4, or later supported vendor packages.; Review vendor advisories for distribution-specific patched package names and backports.; Identify svnserve instances using Cyrus SASL authentication..

Prepared: Jun 13, 2026, 14:44 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 5, 2016, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
GLSA-201610-05CVE reference · vendor-advisory, x_refsource_GENTOO
https://www.oracle.com/security-alerts/cpuoct2020.htmlCVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

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