CVE-2012-6139

libxslt before 1.1.28 allows remote attackers to cause a denial of service (NULL pointer...

5.0 MediumFix available

libxslt before 1.1.28 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an (1) empty match attribute in a XSL key to the xsltAddKey function in keys.c or (2) uninitialized variable to the xsltDocumentFunction function in functions.c.

Exploit likelihood

4.29%Down 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2012-6139
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-6139
Updated: 2026-11-02

EUVDEUVD-2012-6000 No score

Record: EUVD-2012-6000
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jg9f-36wv-mjmx No score

libxslt before 1.1.28 allows remote attackers to cause a denial of service (NULL pointer...

Record: GHSA-jg9f-36wv-mjmx
Updated: 2026-11-02

OSV No score

Record: CVE-2012-6139
Updated: 2026-11-02

OSVDEBIAN-CVE-2012-6139 No score

Record: DEBIAN-CVE-2012-6139
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`libxslt` Debian:12	before 1.1.26-14.1	1.1.26-14.1
`libxslt` Debian:13	before 1.1.26-14.1	1.1.26-14.1
`libxslt` Debian:14	before 1.1.26-14.1	1.1.26-14.1
`libxslt` Debian:6.0	before 1.1.26-6+squeeze3, plus listed versions 1.1.26-61.1.26-6+squeeze11.1.26-6+squeeze2	1.1.26-6+squeeze3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-6139 is a medium vulnerability (CVSS 5.0) in Xmlsoft Libxslt, published April 3, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.29%, the 91st percentile. Fixed in libxslt 1.1.26-14.1.

References

Show 16 moreShow less