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Vulnerability record · CVE-2009-0843 · published 31 March 2009

CVE-2009-0843: Osgeo mapserver improper input validation vulnerability

Osgeo · Mapserver

The msLoadQuery function in mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2 allows remote attackers to determine the existence of arbitrary files via a full pathname in the queryfile parameter, which triggers different error messages depending on whether this pathname exists.

7.8 CVSS 2.0 High EPSS 3.1% · top 12.6% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
22References
16 Jun 2026Last modified by NVD

Description

The msLoadQuery function in mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2 allows remote attackers to determine the existence of arbitrary files via a full pathname in the queryfile parameter, which triggers different error messages depending on whether this pathname exists.

AV:N/AC:L/Au:N/C:C/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.osgeo.org/pipermail/mapserver-users/2009-March/060600.html Patch
http://secunia.com/advisories/34520
http://secunia.com/advisories/34603
http://trac.osgeo.org/mapserver/ticket/2939
http://www.debian.org/security/2009/dsa-1914
http://www.positronsecurity.com/advisories/2009-000.html
http://www.securityfocus.com/archive/1/502271/100/0/threaded
http://www.securityfocus.com/bid/34306
http://www.securitytracker.com/id?1021952
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00147.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00170.html
http://lists.osgeo.org/pipermail/mapserver-users/2009-March/060600.html Patch
http://secunia.com/advisories/34520
http://secunia.com/advisories/34603
http://trac.osgeo.org/mapserver/ticket/2939
http://www.debian.org/security/2009/dsa-1914
http://www.positronsecurity.com/advisories/2009-000.html
http://www.securityfocus.com/archive/1/502271/100/0/threaded
http://www.securityfocus.com/bid/34306
http://www.securitytracker.com/id?1021952
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00147.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00170.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-0843), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.