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CVE-2011-1921

19
FAUCET Score

CVE-2011-1921 describes a vulnerability in the mod_dav_svn module of Apache Subversion versions 1.5.x and 1.6.x before 1.6.17. When the SVNPathAuthz short_circuit option is disabled, this flaw allows remote attackers to bypass access controls and retrieve previously publicly readable files via a replayed REPORT operation. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial confidentiality impact, but no integrity or availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.0CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.5.0:*:*:*:*:*:*:*
1.5.1CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.5.1:*:*:*:*:*:*:*
1.5.2CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.5.2:*:*:*:*:*:*:*
1.5.3CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.5.3:*:*:*:*:*:*:*
1.5.4CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.99%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0599 is in the 91st percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: subversion-0:1.6.11-7.el5_6.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: subversion-0:1.6.11-2.el6_1.4
View patch

Vendor Advisories (1)

redhatCVE-2011-1921Low

(mod_dav_svn): File contents disclosure of files configured to be unreadable by those users

Jun 1, 2011

References

lists.apple.com / archives/security-announce/2012/Feb/msg00000.html
lists.fedoraproject.org / pipermail/package-announce/2011-July/062211.html
lists.fedoraproject.org / pipermail/package-announce/2011-June/061913.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/44633
Vendor Advisory
secunia.com / advisories/44681
Vendor Advisory
secunia.com / advisories/44849
secunia.com / advisories/44888
secunia.com / advisories/45162
exchange.xforce.ibmcloud.com / vulnerabilities/67804
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18999
subversion.apache.org / security/CVE-2011-1921-advisory.txt
Vendor Advisory
support.apple.com / kb/HT5130
svn.apache.org / repos/asf/subversion/tags/1.6.17/CHANGES
debian.org / security/2011/dsa-2251
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2011-0862.html
securityfocus.com / bid/48091
securitytracker.com / id
ubuntu.com / usn/USN-1144-1