CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2009-1955
High (7.5). EPSS 53% chance of exploitation in the next 30 days.
The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.
Severity
- EPSS
- 53% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CWE
- CWE-776
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:apr-util
- apache:http_server
- apple:mac_os_x
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- oracle:http_server
- suse:linux_enterprise_server