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Vulnerability record · CVE-2009-1839 · published 12 June 2009

CVE-2009-1839: Mozilla firefox permissions and access controls vulnerability

Mozilla · Firefox

Mozilla Firefox 3 before 3.0.11 associates an incorrect principal with a file: URL loaded through the location bar, which allows user-assisted remote attackers to bypass intended access restrictions and read files via a crafted HTML document, aka a "file-URL-to-file-URL scripting" attack.

5.4 CVSS 2.0 Medium EPSS 7.1% · top 6.0% CWE-264 · Permissions and access controls
5.4CVSS 2.0 base score
7.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
36References
16 Jun 2026Last modified by NVD

Description

Mozilla Firefox 3 before 3.0.11 associates an incorrect principal with a file: URL loaded through the location bar, which allows user-assisted remote attackers to bypass intended access restrictions and read files via a crafted HTML document, aka a "file-URL-to-file-URL scripting" attack.

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

Affected products

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

References

LinkTags
http://osvdb.org/55163
http://secunia.com/advisories/35331 Vendor Advisory
http://secunia.com/advisories/35415
http://secunia.com/advisories/35431 Vendor Advisory
http://secunia.com/advisories/35468
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468
http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
http://www.debian.org/security/2009/dsa-1820
http://www.mozilla.org/security/announce/2009/mfsa2009-30.html Vendor Advisory
http://www.securityfocus.com/bid/35326 Patch
http://www.securityfocus.com/bid/35386
http://www.vupen.com/english/advisories/2009/1572 PatchVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=479943
https://bugzilla.redhat.com/show_bug.cgi?id=503581
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9256
https://rhn.redhat.com/errata/RHSA-2009-1095.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.html
http://osvdb.org/55163
http://secunia.com/advisories/35331 Vendor Advisory
http://secunia.com/advisories/35415
http://secunia.com/advisories/35431 Vendor Advisory
http://secunia.com/advisories/35468
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468
http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
http://www.debian.org/security/2009/dsa-1820
http://www.mozilla.org/security/announce/2009/mfsa2009-30.html Vendor Advisory
http://www.securityfocus.com/bid/35326 Patch
http://www.securityfocus.com/bid/35386
http://www.vupen.com/english/advisories/2009/1572 PatchVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=479943
https://bugzilla.redhat.com/show_bug.cgi?id=503581
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9256
https://rhn.redhat.com/errata/RHSA-2009-1095.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.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-2009-1839), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.