Not yet rated — under the NVD policy in effect since April 2026, most CVEs are no longer analyzed immediately. The EPSS score (if available) is still shown.
Description
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 crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.
Affected products
libexpat_project: libexpat; python: python; python: pyxml; apache: http server
References10
- expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?… Exploit
- expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?… Exploit
- expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?… Mailing ListThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2010-Novembe… Third Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2010-Novembe… Mailing ListThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2010-Novembe… Third Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2010-Novembe… Third Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2010-Novembe… Third Party Advisory
- lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.… Third Party Advisory
- lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.… Third Party AdvisoryVDB Entry
Metrics
- EPSS — exploit probability
- 28% percentile: 98 · as of 2 November 2026