CVE-2013-4505

The is_this_legal function in mod_dontdothat for Apache Subversion 1.4.0 through 1.7.13 and 1.8.0 through 1.8.4 allows remote attackers to bypass intended access restrictions and possibly cause a denial of service (resource consumption) via a relative URL in a REPORT request.

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-2013-4505 is rated Moderate Risk (48.3/100): CVSS Low severity, with high exploitation likelihood (EPSS 7.86%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +6.22% 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-2013-4505

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 1.64% 7.86% +6.22%
2 2025-12-28 1.79% 1.64% -0.15%
3 2025-12-27 — 1.79% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4505

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.6 2.0 LOW
AV:N/AC:H/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 4.9 2.9 [email protected]

Weakness enumeration for CVE-2013-4505

OS Trackers for CVE-2013-4505

vendor priority summary link
debian unimportant CVE-2013-4505 unimportant 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-2013-4505
redhat low — https://access.redhat.com/security/cve/CVE-2013-4505
ubuntu medium CVE-2013-4505 medium priority: Ubuntu including 1 source packages (subversion), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): not-affected 4, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2013-4505

Affected software / configurations for CVE-2013-4505

Vendor Product Version Raw CPE
apache mod_dontdothat — cpe:2.3:a:apache:mod_dontdothat:-:*:*:*:*:*:*:*
apache subversion 1.4.0 cpe:2.3:a:apache:subversion:1.4.0:*:*:*:*:*:*:*
apache subversion 1.4.1 cpe:2.3:a:apache:subversion:1.4.1:*:*:*:*:*:*:*
apache subversion 1.4.2 cpe:2.3:a:apache:subversion:1.4.2:*:*:*:*:*:*:*
apache subversion 1.4.3 cpe:2.3:a:apache:subversion:1.4.3:*:*:*:*:*:*:*
apache subversion 1.4.4 cpe:2.3:a:apache:subversion:1.4.4:*:*:*:*:*:*:*
apache subversion 1.4.5 cpe:2.3:a:apache:subversion:1.4.5:*:*:*:*:*:*:*
apache subversion 1.4.6 cpe:2.3:a:apache:subversion:1.4.6:*:*:*:*:*:*:*
apache subversion 1.5.0 cpe:2.3:a:apache:subversion:1.5.0:*:*:*:*:*:*:*
apache subversion 1.5.1 cpe:2.3:a:apache:subversion:1.5.1:*:*:*:*:*:*:*
apache subversion 1.5.2 cpe:2.3:a:apache:subversion:1.5.2:*:*:*:*:*:*:*
apache subversion 1.5.3 cpe:2.3:a:apache:subversion:1.5.3:*:*:*:*:*:*:*
apache subversion 1.5.4 cpe:2.3:a:apache:subversion:1.5.4:*:*:*:*:*:*:*
apache subversion 1.5.5 cpe:2.3:a:apache:subversion:1.5.5:*:*:*:*:*:*:*
apache subversion 1.5.6 cpe:2.3:a:apache:subversion:1.5.6:*:*:*:*:*:*:*
apache subversion 1.5.7 cpe:2.3:a:apache:subversion:1.5.7:*:*:*:*:*:*:*
apache subversion 1.5.8 cpe:2.3:a:apache:subversion:1.5.8:*:*:*:*:*:*:*
apache subversion 1.6.0 cpe:2.3:a:apache:subversion:1.6.0:*:*:*:*:*:*:*
apache subversion 1.6.1 cpe:2.3:a:apache:subversion:1.6.1:*:*:*:*:*:*:*
apache subversion 1.6.2 cpe:2.3:a:apache:subversion:1.6.2:*:*:*:*:*:*:*
apache subversion 1.6.3 cpe:2.3:a:apache:subversion:1.6.3:*:*:*:*:*:*:*
apache subversion 1.6.4 cpe:2.3:a:apache:subversion:1.6.4:*:*:*:*:*:*:*
apache subversion 1.6.5 cpe:2.3:a:apache:subversion:1.6.5:*:*:*:*:*:*:*
apache subversion 1.6.6 cpe:2.3:a:apache:subversion:1.6.6:*:*:*:*:*:*:*
apache subversion 1.6.7 cpe:2.3:a:apache:subversion:1.6.7:*:*:*:*:*:*:*
apache subversion 1.6.8 cpe:2.3:a:apache:subversion:1.6.8:*:*:*:*:*:*:*
apache subversion 1.6.9 cpe:2.3:a:apache:subversion:1.6.9:*:*:*:*:*:*:*
apache subversion 1.6.10 cpe:2.3:a:apache:subversion:1.6.10:*:*:*:*:*:*:*
apache subversion 1.6.11 cpe:2.3:a:apache:subversion:1.6.11:*:*:*:*:*:*:*
apache subversion 1.6.12 cpe:2.3:a:apache:subversion:1.6.12:*:*:*:*:*:*:*
apache subversion 1.6.13 cpe:2.3:a:apache:subversion:1.6.13:*:*:*:*:*:*:*
apache subversion 1.6.14 cpe:2.3:a:apache:subversion:1.6.14:*:*:*:*:*:*:*
apache subversion 1.6.15 cpe:2.3:a:apache:subversion:1.6.15:*:*:*:*:*:*:*
apache subversion 1.6.16 cpe:2.3:a:apache:subversion:1.6.16:*:*:*:*:*:*:*
apache subversion 1.6.17 cpe:2.3:a:apache:subversion:1.6.17:*:*:*:*:*:*:*
apache subversion 1.6.18 cpe:2.3:a:apache:subversion:1.6.18:*:*:*:*:*:*:*
apache subversion 1.6.19 cpe:2.3:a:apache:subversion:1.6.19:*:*:*:*:*:*:*
apache subversion 1.6.20 cpe:2.3:a:apache:subversion:1.6.20:*:*:*:*:*:*:*
apache subversion 1.6.21 cpe:2.3:a:apache:subversion:1.6.21:*:*:*:*:*:*:*
apache subversion 1.6.23 cpe:2.3:a:apache:subversion:1.6.23:*:*:*:*:*:*:*
apache subversion 1.7.0 cpe:2.3:a:apache:subversion:1.7.0:*:*:*:*:*:*:*
apache subversion 1.7.1 cpe:2.3:a:apache:subversion:1.7.1:*:*:*:*:*:*:*
apache subversion 1.7.2 cpe:2.3:a:apache:subversion:1.7.2:*:*:*:*:*:*:*
apache subversion 1.7.3 cpe:2.3:a:apache:subversion:1.7.3:*:*:*:*:*:*:*
apache subversion 1.7.4 cpe:2.3:a:apache:subversion:1.7.4:*:*:*:*:*:*:*
apache subversion 1.7.5 cpe:2.3:a:apache:subversion:1.7.5:*:*:*:*:*:*:*
apache subversion 1.7.6 cpe:2.3:a:apache:subversion:1.7.6:*:*:*:*:*:*:*
apache subversion 1.7.7 cpe:2.3:a:apache:subversion:1.7.7:*:*:*:*:*:*:*
apache subversion 1.7.8 cpe:2.3:a:apache:subversion:1.7.8:*:*:*:*:*:*:*
apache subversion 1.7.9 cpe:2.3:a:apache:subversion:1.7.9:*:*:*:*:*:*:*
apache subversion 1.7.10 cpe:2.3:a:apache:subversion:1.7.10:*:*:*:*:*:*:*
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 1.8.1 cpe:2.3:a:apache:subversion:1.8.1:*:*:*:*:*:*:*

References for CVE-2013-4505

cvelogic Threat Intelligence