CVE-2004-1156

CVE-2004-1156 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Mozilla before 1.7.6, and Firefox before 1.0.1, allows remote attackers to spoof arbitrary web sites by injecting content from one window into a target window whose name is known but resides in a different domain, as demonstrated using a pop-up window on a trusted web site, aka the "window injection" vulnerability.

Frequently asked questions

What is CVE-2004-1156?
Mozilla before 1.7.6, and Firefox before 1.0.1, allows remote attackers to spoof arbitrary web sites by injecting content from one window into a target window whose name is known but resides in a different domain, as demonstrated using a pop-up window on a trusted web site, aka the "window injection" vulnerability.
How severe is CVE-2004-1156?
CVE-2004-1156 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2004-1156 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1156?
CVE-2004-1156 primarily affects Mozilla Firefox. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-1156?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-1156 published?
CVE-2004-1156 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (53)

More vulnerabilities in Mozilla Firefox

All CVEs affecting Mozilla Firefox →