UpHeron
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Servers and applications

CVE-2011-1944

Integer overflow in xpath.c in libxml2 2.6.x through 2.6.32 and 2.7.x through 2.7.8, and libxml 1.8.16 and earlier, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XML file that triggers a heap-based buffer overflow when adding a new namespace node, related to handling of XPath expressions.

Severity
High 9.3
Published
2 Sept 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
13% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
Over the network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
libxml2Servers and applications · cpe:a:xmlsoft:libxml2
  • Version 2.7.8
  • Version 2.7.7
  • Version 2.7.6
  • Version 2.7.5
All 32 release lines
  • Version 2.6.0
  • Version 2.6.1
  • Version 2.6.2
  • Version 2.6.3
  • Version 2.6.4
  • Version 2.6.5
  • Version 2.6.6
  • Version 2.6.7
  • Version 2.6.8
  • Version 2.6.9
  • Version 2.6.11
  • Version 2.6.12
  • Version 2.6.13
  • Version 2.6.14
  • Version 2.6.16
  • Version 2.6.17
  • Version 2.6.18
  • Version 2.6.20
  • Version 2.6.22
  • Version 2.6.26
  • Version 2.6.27
  • Version 2.6.30
  • Version 2.6.32
  • Version 2.7.0
  • Version 2.7.1
  • Version 2.7.2
  • Version 2.7.3
  • Version 2.7.4
  • Version 2.7.5
  • Version 2.7.6
  • Version 2.7.7
  • Version 2.7.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1944
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1944