Medium severity6.5NVD Advisory· Published Dec 31, 2003· Updated Apr 16, 2026
CVE-2003-1564
CVE-2003-1564
Description
libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- mail.gnome.org/archives/xml/2008-August/msg00034.htmlnvdMailing ListPatch
- secunia.com/advisories/31868nvdBroken Link
- www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2nvdIssue Tracking
- www.redhat.com/support/errata/RHSA-2008-0886.htmlnvdBroken Link
- www.stylusstudio.com/xmldev/200302/post20020.htmlnvdBroken Link
- xmlsoft.org/news.htmlnvdRelease Notes
News mentions
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