Back
CVE-2009-2473
neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent…
Medium4.3EPSS 8.4%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
neon before 0.28.6, when expat is used, 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, a similar issue to CVE-2003-1564.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 8.4% · top 5.0% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
References (13)
- [neon] 20090818 neon: release 0.28.6 (SECURITY) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- oval:org.mitre.oval:def:9461 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://support.apple.com/kb/HT4435 (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SR:2009:018 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- ADV-2009-2341 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- MDVSA-2009:221 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- APPLE-SA-2010-11-10-1 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- RHSA-2013:0131 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 36371 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2009-8815 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2009-8794 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- neon-xml-dos(52633) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [neon] 20090818 CVE-2009-2473: fix for "billion laughs" attack against expat (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-2473)Record last updated .