peter bassill · operator
$ cve CVE-2009-1955 JSON

CVE-2009-1955 EXPLOIT

7.5
HIGH · CVSS 3.1 · EPSS 53% (pctl 99)

Patch early

A public exploit exists.

Description

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.

Scoring

CVSS7.5 (HIGH, v3.1)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS52.99% — more likely to be exploited than 99% of all CVEs
WeaknessCWE-776
On CISA KEVno
Public exploityes
Published2009-06-08
Last modified2026-06-16

Affected (8)

VendorProduct
apacheapr-util
apachehttp server
applemac os x
canonicalubuntu linux
debiandebian linux
fedoraprojectfedora
oraclehttp server
suselinux enterprise server

Public exploits

SourceTitleDate
exploit-dbApache mod_dav / svn - Remote Denial of Service2009-06-01

References

→ the Explorer  ·  watch your stack  ·  NVD