CVE-2011-1921

Subversion vulnerability

CVSS

4.3

EPSS

6.0%

EPSS pct

93th

Exploited

No known

The mod_dav_svn module for the Apache HTTP Server, as distributed in Apache Subversion 1.5.x and 1.6.x before 1.6.17, when the SVNPathAuthz short_circuit option is disabled, does not properly enforce permissions for files that had been publicly readable in the past, which allows remote attackers to obtain sensitive information via a replay REPORT operation.

Affected vendor

Apache

Affected product

Subversion

CVSS vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Weakness type (CWE)

CWE-264 — Permissions, Privileges, and Access Controls

Published

2011-06-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality.

Its EPSS score of 6.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2011-1921

Confirm whether Apache Subversion is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-1921.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-1921

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-1921 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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