Vulnerability Report

CVE-2013-4520

Title: Xmlsoft Libxslt Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2013-4520.

CWE Category NVD-CWE-noinfo

Published Date Dec 14, 2013

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 4.3 CVSS v2.0

Exploit Probability (EPSS)

2.29%

Vulnerability Summary

CVE-2013-4520: xslt.c in libxslt before 1.1.25 allows context-dependent attackers to cause a denial of service (crash) via a stylesheet that embeds a DTD, which causes a structure to be accessed as a different type. NOTE: this issue is due to an incomplete fix for CVE-2012-2825.

Impacted Vendors

xmlsoft 1

Reference Links

http://seclists.org/oss-sec/2013/q4/238 http://seclists.org/oss-sec/2013/q4/239 http://secunia.com/advisories/56072 http://www.osvdb.org/99671 https://bugzilla.novell.com/show_bug.cgi?id=849019 https://gitorious.org/libxslt/libxslt/commit/7089a62b8f133b42a2981cf1f920a8b3fe9a8caa https://www.suse.com/support/update/announcement/2013/suse-su-20131654-1.html https://www.suse.com/support/update/announcement/2013/suse-su-20131656-1.html http://seclists.org/oss-sec/2013/q4/238 http://seclists.org/oss-sec/2013/q4/239 http://secunia.com/advisories/56072 http://www.osvdb.org/99671 https://bugzilla.novell.com/show_bug.cgi?id=849019 https://gitorious.org/libxslt/libxslt/commit/7089a62b8f133b42a2981cf1f920a8b3fe9a8caa https://www.suse.com/support/update/announcement/2013/suse-su-20131654-1.html https://www.suse.com/support/update/announcement/2013/suse-su-20131656-1.html

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2013-4520 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

December 14, 2013 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.