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Fencer Vulns
medium 4.3

CVE-2007-3844 json

Mozilla Firefox 2.0.0.5, Thunderbird 2.0.0.5 and before 1.5.0.13, and SeaMonkey 1.1.3 allows remote attackers to conduct cross-site scripti…

published 2007-08-08 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3828

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.4%
EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits
1
Exploit-DB

Summary

Mozilla Firefox 2.0.0.5, Thunderbird 2.0.0.5 and before 1.5.0.13, and SeaMonkey 1.1.3 allows remote attackers to conduct cross-site scripting (XSS) attacks with chrome privileges via an addon that inserts a (1) javascript: or (2) data: link into an about:blank document loaded by chrome via (a) the window.open function or (b) a content.location assignment, aka "Cross Context Scripting." NOTE: this issue is caused by a CVE-2007-3089 regression.

Patch / fix

  • thunderbird RHEL 4 1.5.0.12-0.5.el4
  • thunderbird RHEL 5 1.5.0.12-5.el5
  • seamonkey RHEL 2.1 1.0.9-0.6.el2
  • seamonkey RHEL 3 1.0.9-0.5.el3
  • seamonkey RHEL 4 1.0.9-6.el4
  • seamonkey-nss RHEL 2.1 1.0.9-0.6.el2
  • seamonkey-nss RHEL 3 1.0.9-0.5.el3
  • seamonkey-chat RHEL 2.1 1.0.9-0.6.el2

red hat advisories RHSA-2007:0981RHSA-2007:0980RHSA-2007:0979

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-3844 updated

about: blank windows

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.5.el3, seamonkey-nss 1.0.9-0.5.el3, seamonkey-chat 1.0.9-0.5.el3, seamonkey-mail 1.0.9-0.5.el3, seamonkey-nspr 1.0.9-0.5.el3, seamonkey-js-debugger 1.0.9-0.5.el3, +1 more
    fixed: vendor fix RHSA-2007:0980
  • Red Hat Enterprise Linux (v. 5 server) firefox 1.5.0.12-6.el5
    fixed: vendor fix RHSA-2007:0979
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 seamonkey 1.0.9-0.6.el2, seamonkey-nss 1.0.9-0.6.el2, seamonkey-chat 1.0.9-0.6.el2, seamonkey-mail 1.0.9-0.6.el2, seamonkey-nspr 1.0.9-0.6.el2, seamonkey-js-debugger 1.0.9-0.6.el2, +1 more Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.5.el3, seamonkey-nss 1.0.9-0.5.el3, seamonkey-chat 1.0.9-0.5.el3, seamonkey-mail 1.0.9-0.5.el3, seamonkey-nspr 1.0.9-0.5.el3, seamonkey-js-debugger 1.0.9-0.5.el3, +1 more Red Hat Enterprise Linux AS version 4 seamonkey 1.0.9-6.el4, firefox 1.5.0.12-0.7.el4, seamonkey-chat 1.0.9-6.el4, seamonkey-mail 1.0.9-6.el4, thunderbird 1.5.0.12-0.5.el4, seamonkey-js-debugger 1.0.9-6.el4, +1 more
    fixed: vendor fix RHSA-2007:0980
  • Red Hat Enterprise Linux Desktop (v. 5 client) firefox 1.5.0.12-6.el5, thunderbird 1.5.0.12-5.el5
    fixed: vendor fix RHSA-2007:0979
  • Red Hat Enterprise Linux Desktop version 4 seamonkey 1.0.9-6.el4, firefox 1.5.0.12-0.7.el4, seamonkey-chat 1.0.9-6.el4, seamonkey-mail 1.0.9-6.el4, thunderbird 1.5.0.12-0.5.el4, seamonkey-js-debugger 1.0.9-6.el4, +1 more Red Hat Enterprise Linux ES version 2.1 seamonkey 1.0.9-0.6.el2, seamonkey-nss 1.0.9-0.6.el2, seamonkey-chat 1.0.9-0.6.el2, seamonkey-mail 1.0.9-0.6.el2, seamonkey-nspr 1.0.9-0.6.el2, seamonkey-js-debugger 1.0.9-0.6.el2, +1 more Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.5.el3, seamonkey-nss 1.0.9-0.5.el3, seamonkey-chat 1.0.9-0.5.el3, seamonkey-mail 1.0.9-0.5.el3, seamonkey-nspr 1.0.9-0.5.el3, seamonkey-js-debugger 1.0.9-0.5.el3, +1 more Red Hat Enterprise Linux ES version 4 seamonkey 1.0.9-6.el4, firefox 1.5.0.12-0.7.el4, seamonkey-chat 1.0.9-6.el4, seamonkey-mail 1.0.9-6.el4, thunderbird 1.5.0.12-0.5.el4, seamonkey-js-debugger 1.0.9-6.el4, +1 more Red Hat Enterprise Linux WS version 2.1 seamonkey 1.0.9-0.6.el2, seamonkey-nss 1.0.9-0.6.el2, seamonkey-chat 1.0.9-0.6.el2, seamonkey-mail 1.0.9-0.6.el2, seamonkey-nspr 1.0.9-0.6.el2, seamonkey-js-debugger 1.0.9-0.6.el2, +1 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.5.el3, seamonkey-nss 1.0.9-0.5.el3, seamonkey-chat 1.0.9-0.5.el3, seamonkey-mail 1.0.9-0.5.el3, seamonkey-nspr 1.0.9-0.5.el3, seamonkey-js-debugger 1.0.9-0.5.el3, +1 more
    +2 more products
    Red Hat Enterprise Linux WS version 4 seamonkey 1.0.9-6.el4, firefox 1.5.0.12-0.7.el4, seamonkey-chat 1.0.9-6.el4, seamonkey-mail 1.0.9-6.el4, thunderbird 1.5.0.12-0.5.el4, seamonkey-js-debugger 1.0.9-6.el4, +1 more Red Hat Linux Advanced Workstation 2.1 seamonkey 1.0.9-0.6.el2, seamonkey-nss 1.0.9-0.6.el2, seamonkey-chat 1.0.9-0.6.el2, seamonkey-mail 1.0.9-0.6.el2, seamonkey-nspr 1.0.9-0.6.el2, seamonkey-js-debugger 1.0.9-0.6.el2, +1 more
    fixed: vendor fix RHSA-2007:0980

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-30439)
  2. Published

Exploit prediction

5.45% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30439 Mozilla Firefox/Thunderbird/SeaMonkey - Chrome-Loaded About:Blank Script Execution remote, 2007-07-31
  • securityfocus.com http://www.securityfocus.com/bid/25142 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.