CVE-2009-1955: n/a vulnerability

CVE-2009-1955: The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used i...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:36 UTC (UTC+00:00)

Security readout for executives and security teams

This vulnerability can let a remote requester make an affected Apache/WebDAV service consume excessive memory by sending specially crafted XML. The business impact is service disruption, not data theft or code execution based on the provided sources. Most likely exposure is internet- or intranet-facing Apache HTTP Server instances with WebDAV or Subversion DAV enabled and APR-util older than 1.3.7. Prioritize remediation for externally reachable WebDAV or SVN-over-HTTP services. Internal-only or unused DAV deployments are lower urgency, but the fix is mature and should be handled through normal patch management. Mitigation focus: Upgrade APR-util to 1.3.7 or a vendor-fixed package.; Follow the relevant distribution advisory for supported package versions.; Disable mod_dav or mod_dav_svn where not required..

Prepared: Jun 28, 2026, 10:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 6, 2009, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
FEDORA-2009-5969CVE reference · vendor-advisory, x_refsource_FEDORA
oval:org.mitre.oval:def:10270CVE reference · vdb-entry, signature
FEDORA-2009-6014CVE reference · vendor-advisory, x_refsource_FEDORA
oval:org.mitre.oval:def:12473CVE reference · vdb-entry, signature
FEDORA-2009-6261CVE reference · vendor-advisory, x_refsource_FEDORA
8842CVE reference · exploit, x_refsource_EXPLOIT-DB

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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