CVE-2013-4558

The get_parent_resource function in repos.c in mod_dav_svn Apache HTTPD server module in Subversion 1.7.11 through 1.7.13 and 1.8.1 through 1.8.4, when built with assertions enabled and SVNAutoversioning is enabled, allows remote attackers to cause a denial of service (assertion failure and Apache process abort) via a non-canonical URL in a request, as demonstrated using a trailing /.

Published: 2013-12-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4558 is rated Moderate Risk (50.4/100): CVSS Low severity, with high exploitation likelihood (EPSS 5.88%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.10% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-4558

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.78% 5.88% +4.10%
2 2025-05-06 2.00% 1.78% -0.22%
3 2025-03-30 — 2.00% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4558

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.5 2.0 LOW
AV:N/AC:M/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.8 2.9 [email protected]

Weakness enumeration for CVE-2013-4558

OS Trackers for CVE-2013-4558

vendor priority summary link
debian not yet assigned CVE-2013-4558 not yet assigned priority: Debian including 1 source packages (subversion), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4558
redhat medium — https://access.redhat.com/security/cve/CVE-2013-4558
ubuntu low CVE-2013-4558 low priority: Ubuntu including 1 source packages (subversion), 7 status rows across 7 suites (lucid, precise, quantal, raring, saucy, trusty, upstream): not-affected 4, DNE 1, ignored 1, released 1. https://ubuntu.com/security/CVE-2013-4558

Affected software / configurations for CVE-2013-4558

Vendor Product Version Raw CPE
apache mod_dav_svn — cpe:2.3:a:apache:mod_dav_svn:-:*:*:*:*:*:*:*
apache subversion 1.7.11 cpe:2.3:a:apache:subversion:1.7.11:*:*:*:*:*:*:*
apache subversion 1.7.12 cpe:2.3:a:apache:subversion:1.7.12:*:*:*:*:*:*:*
apache subversion 1.7.13 cpe:2.3:a:apache:subversion:1.7.13:*:*:*:*:*:*:*
apache subversion 1.8.1 cpe:2.3:a:apache:subversion:1.8.1:*:*:*:*:*:*:*
apache subversion 1.8.2 cpe:2.3:a:apache:subversion:1.8.2:*:*:*:*:*:*:*
apache subversion 1.8.3 cpe:2.3:a:apache:subversion:1.8.3:*:*:*:*:*:*:*
apache subversion 1.8.4 cpe:2.3:a:apache:subversion:1.8.4:*:*:*:*:*:*:*

References for CVE-2013-4558

cvelogic Threat Intelligence