CVE-2009-1839

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-06-12 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Mozilla Firefox: through 3.0.10; 3.0, 3.0-alpha, 3.0-beta2, 3.0-beta5, 3.0.1, 3.0.2 (+9)

References

http://osvdb.org/55163
http://secunia.com/advisories/35331
http://secunia.com/advisories/35415
http://secunia.com/advisories/35431
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
http://www.securityfocus.com/bid/35326
http://www.securityfocus.com/bid/35386
http://www.vupen.com/english/advisories/2009/1572

Get alerted when CVE-2009-1839 or the next vulnerability affects your stack