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CVE-2013-4505

13
FAUCET Score

CVE-2013-4505 describes a bypass vulnerability in the is_this_legal function of mod_dontdothat for Apache Subversion versions 1.4.0 through 1.7.13 and 1.8.0 through 1.8.4. An attacker can exploit this by sending a REPORT request with a relative URL, potentially bypassing access restrictions and causing a denial of service due to resource consumption. The vulnerability has a low CVSS score of 2.6, indicating a network attack vector with high attack complexity and a partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:apache:mod_dontdothat:-:*:*:*:*:*:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.0:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.1:*:*:*:*:*:*:*
1.4.2CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.2:*:*:*:*:*:*:*
1.4.3CPE matchmatch criteria
cpe:2.3:a:apache:subversion:1.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.6LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.86%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0786 is in the 94th percentile among its peer group of 1,505 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 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

Vendor Advisories (1)

redhatCVE-2013-4505Low

subversion: mod_dontdothat does not block requests from certain clients

Nov 25, 2013

References

lists.opensuse.org / opensuse-updates/2013-12/msg00029.html
lists.opensuse.org / opensuse-updates/2013-12/msg00048.html
osvdb.org / 100364
secunia.com / advisories/55855
Vendor Advisory
subversion.apache.org / security/CVE-2013-4505-advisory.txt
PatchVendor Advisory