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Fencer Vulns
medium 4.3

CVE-2007-2870 json

Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2, allows remote attackers to bypass the same-ori…

published 2007-06-01 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2862

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2, allows remote attackers to bypass the same-origin policy and conduct cross-site scripting (XSS) and other attacks by using the addEventListener method to add an event listener for a site, which is executed in the context of that site.

Patch / fix

  • seamonkey RHEL 2.1 1.0.9-0.1.el2
  • seamonkey RHEL 3 1.0.9-0.1.el3
  • seamonkey RHEL 4 1.0.9-2.el4
  • devhelp RHEL 4 0.10-0.8.el4
  • seamonkey-nss RHEL 2.1 1.0.9-0.1.el2
  • seamonkey-nss RHEL 3 1.0.9-0.1.el3
  • seamonkey-chat RHEL 2.1 1.0.9-0.1.el2
  • seamonkey-chat RHEL 3 1.0.9-0.1.el3

red hat advisories RHSA-2007:0402RHSA-2007:0400

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-2007-2870 updated

security flaw

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.1.el3, seamonkey-nss 1.0.9-0.1.el3, seamonkey-chat 1.0.9-0.1.el3, seamonkey-mail 1.0.9-0.1.el3, seamonkey-nspr 1.0.9-0.1.el3, seamonkey-js-debugger 1.0.9-0.1.el3, +1 more
    fixed: vendor fix RHSA-2007:0402
  • Red Hat Enterprise Linux (v. 5 server) yelp 2.16.0-15.el5, devhelp 0.12-11.el5, firefox 1.5.0.12-1.el5
    fixed: vendor fix RHSA-2007:0400
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 seamonkey 1.0.9-0.1.el2, seamonkey-nss 1.0.9-0.1.el2, seamonkey-chat 1.0.9-0.1.el2, seamonkey-mail 1.0.9-0.1.el2, seamonkey-nspr 1.0.9-0.1.el2, seamonkey-js-debugger 1.0.9-0.1.el2, +1 more Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.1.el3, seamonkey-nss 1.0.9-0.1.el3, seamonkey-chat 1.0.9-0.1.el3, seamonkey-mail 1.0.9-0.1.el3, seamonkey-nspr 1.0.9-0.1.el3, seamonkey-js-debugger 1.0.9-0.1.el3, +1 more Red Hat Enterprise Linux AS version 4 devhelp 0.10-0.8.el4, seamonkey 1.0.9-2.el4, firefox 1.5.0.12-0.1.el4, seamonkey-chat 1.0.9-2.el4, seamonkey-mail 1.0.9-2.el4, seamonkey-js-debugger 1.0.9-2.el4, +1 more
    fixed: vendor fix RHSA-2007:0402
  • Red Hat Enterprise Linux Desktop (v. 5 client) yelp 2.16.0-15.el5, devhelp 0.12-11.el5, firefox 1.5.0.12-1.el5
    fixed: vendor fix RHSA-2007:0400
  • Red Hat Enterprise Linux Desktop version 4 devhelp 0.10-0.8.el4, seamonkey 1.0.9-2.el4, firefox 1.5.0.12-0.1.el4, seamonkey-chat 1.0.9-2.el4, seamonkey-mail 1.0.9-2.el4, seamonkey-js-debugger 1.0.9-2.el4, +1 more
    fixed: vendor fix RHSA-2007:0402
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) devhelp 0.12-11.el5
    fixed: vendor fix RHSA-2007:0400
  • Red Hat Enterprise Linux ES version 2.1 seamonkey 1.0.9-0.1.el2, seamonkey-nss 1.0.9-0.1.el2, seamonkey-chat 1.0.9-0.1.el2, seamonkey-mail 1.0.9-0.1.el2, seamonkey-nspr 1.0.9-0.1.el2, seamonkey-js-debugger 1.0.9-0.1.el2, +1 more Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.1.el3, seamonkey-nss 1.0.9-0.1.el3, seamonkey-chat 1.0.9-0.1.el3, seamonkey-mail 1.0.9-0.1.el3, seamonkey-nspr 1.0.9-0.1.el3, seamonkey-js-debugger 1.0.9-0.1.el3, +1 more Red Hat Enterprise Linux ES version 4 devhelp 0.10-0.8.el4, seamonkey 1.0.9-2.el4, firefox 1.5.0.12-0.1.el4, seamonkey-chat 1.0.9-2.el4, seamonkey-mail 1.0.9-2.el4, seamonkey-js-debugger 1.0.9-2.el4, +1 more Red Hat Enterprise Linux WS version 2.1 seamonkey 1.0.9-0.1.el2, seamonkey-nss 1.0.9-0.1.el2, seamonkey-chat 1.0.9-0.1.el2, seamonkey-mail 1.0.9-0.1.el2, seamonkey-nspr 1.0.9-0.1.el2, seamonkey-js-debugger 1.0.9-0.1.el2, +1 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.1.el3, seamonkey-nss 1.0.9-0.1.el3, seamonkey-chat 1.0.9-0.1.el3, seamonkey-mail 1.0.9-0.1.el3, seamonkey-nspr 1.0.9-0.1.el3, seamonkey-js-debugger 1.0.9-0.1.el3, +1 more Red Hat Enterprise Linux WS version 4 devhelp 0.10-0.8.el4, seamonkey 1.0.9-2.el4, firefox 1.5.0.12-0.1.el4, seamonkey-chat 1.0.9-2.el4, seamonkey-mail 1.0.9-2.el4, seamonkey-js-debugger 1.0.9-2.el4, +1 more
    +1 more products
    Red Hat Linux Advanced Workstation 2.1 seamonkey 1.0.9-0.1.el2, seamonkey-nss 1.0.9-0.1.el2, seamonkey-chat 1.0.9-0.1.el2, seamonkey-mail 1.0.9-0.1.el2, seamonkey-nspr 1.0.9-0.1.el2, seamonkey-js-debugger 1.0.9-0.1.el2, +1 more
    fixed: vendor fix RHSA-2007:0402

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

Exploit prediction

1.65% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

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.