CVE-2009-1839
Mozilla Firefox 3 before 3.0.11 associates an incorrect principal with a file: URL loaded through the location bar, which allows…
- 5.4MediumCVSS base score
- 7.1%Exploitation in 30 daysEPSS · top 5.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Mozilla Firefox - Location Bar Spoofing (Exploit-DB entry) (opens in a new tab)
EDB-ID 10544local, multiplepublished 18 Dec 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By redhat
- 14 days later
· 14 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.4 | AV:N/AC:H/Au:N/C:C/I:N/A:N |
- EPSS (exploitation in 30 days)
- 7.1% · top 5.7% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
n/a
- affected n/a
References
References18
- https://bugzilla.mozilla.org/show_bug.cgi?id=479943 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-1572 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=503581 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:9256 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 35326 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- FEDORA-2009-6411 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-30.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 35431 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35331 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35468 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2009-6366 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 35415 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2009:1095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 35386 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- SSA:2009-167-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- 55163 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- DSA-1820 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 264308 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-1834 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-1839)Record last updated .