Libexpat vulnerabilitiesRanked by how likely they are to be used.
Libexpat is made by Libexpat Project. We track 40 published vulnerabilities in it, across 44 versions. None of them is on the list of flaws known to be exploited today. If you run Libexpat, keep it on a version the vendor still supports.
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Which Libexpat vulnerabilities are being exploited?
This is the list that matters most: flaws criminals are using now.
None of Libexpat's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.
Which Libexpat flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 35%CVE-2022-25236Critical
xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.
- 28%CVE-2009-3720Medium
The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application...
- 24%CVE-2009-3560Medium
The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document...
- 19%CVE-2013-0340Medium
expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource...
- 18%CVE-2015-1283Medium
Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based buffer...
- 13%CVE-2016-0718Critical
Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.
- 12%CVE-2016-4472High
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data.
- 8.7%CVE-2017-9233High
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
- 7.1%CVE-2018-20843High
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable...
- 6.6%CVE-2019-15903High
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then...
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1 new flaw affects software Acme tracks
xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.
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We track 40 published vulnerabilities listed under the name Libexpat, across 44 versions.
None of Libexpat's vulnerabilities is on the list of flaws known to be exploited today.
Create a Precursor Intelligence account and track Libexpat. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.