CVE-2009-1839: mozilla firefox
Vulnerability summary
CVE-2009-1839 is a medium (CVSS 5.4) vulnerability in mozilla firefox. EPSS estimates a 7.12% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities. 1 public exploit is recorded.
Weaponized exploit (exploit-database, 18-12-2009)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2Timeline
- 12-06-2009PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
7.12%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
No change 0.00 pp
From 7.12% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
1 foundMozilla Firefox - Location Bar Spoofing
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Mozilla1 product
- firefox≤ 3.0.10 | 3.0 | 3.0:alpha | 3.0:beta2 | 3.0:beta5 | 3.0.1 | 3.0.2 | 3.0.3 | 3.0.4 | 3.0.5 | 3.0.6 | 3.0.7 | 3.0.8 | 3.0.9 | 3.0beta5 | 3.1:beta1
1 vendor · 1 product
References
18 links- bugzilla.mozilla.org/show_bug.cgi?id=479943X Refsource CONFIRM
- bugzilla.redhat.com/show_bug.cgi?id=503581X Refsource CONFIRM
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9256VDB EntrySignatureX Refsource OVAL
- www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.htmlVendor AdvisoryX Refsource FEDORA
Show all 18 references
- www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.htmlVendor AdvisoryX Refsource FEDORA
- slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468Vendor AdvisoryX Refsource SLACKWARE