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CVE-2015-5312

The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data, a different vulnerability than CVE-2014-3660.

Severity
High 7.1
Published
15 Dec 2015
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
4.5% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-399
Attack
Over the network · No login needed
Attacker can
Take it down
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
libxml2Servers and applications · cpe:a:xmlsoft:libxml2
  • Every version up to 2.9.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-5312
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-5312