CVE-2009-5031
MEDIUM · CVSS 4.3EPSS 2.9%EU EUVD
ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks via a single quote in a request parameter in the Content-Disposition field of a request with a multipart/form-data Content-Type header.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N- Weakness (CWE)
- CWE-79
- EPSS score
- 2.9% (87th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-4989)
- Published
- July 22, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-4989 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- opensuse / opensuse
- opensuse / opensuse
- opensuse / opensuse
- trustwave / modsecurity
References
- http://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.html(Third Party Advisory)
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html(Mailing List, Third Party Advisory)
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html(Mailing List, Third Party Advisory)
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html(Mailing List, Third Party Advisory)
- http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGES(Broken Link)
- http://secunia.com/advisories/49576(Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2012/06/22/1(Mailing List, Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2012/06/22/2(Mailing List, Third Party Advisory)
- http://www.securityfocus.com/bid/54156(Third Party Advisory, VDB Entry)
- http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf(Third Party Advisory)
- https://www.modsecurity.org/fisheye/browse/modsecurity/m2/branches/2.5.x/apache2/msc_multipart.c?r2=1419&r1=1366(Broken Link)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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