Medium severity6.5NVD Advisory· Published Dec 31, 2003· Updated Jun 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."
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <2.5.0
Patches
Vulnerability mechanics
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
0No linked articles in our index yet.