CVE-2005-1156

Firefox before 1.0.3, Mozilla Suite before 1.7.7, and Netscape 7.2 allows remote attackers to...

7.5 High

Firefox before 1.0.3, Mozilla Suite before 1.7.7, and Netscape 7.2 allows remote attackers to execute arbitrary script and code via a new search plugin using sidebar.addSearchEngine, aka "Firesearching 1."

Exploit likelihood

2.34%Down 1.4 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2005-1156
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-1156
Updated: 2026-11-02

EUVDEUVD-2005-1159 No score

Record: EUVD-2005-1159
Updated: 2026-11-03

GitHub AdvisoriesGHSA-p7cq-vpx5-5pp5 No score

Firefox before 1.0.3, Mozilla Suite before 1.7.7, and Netscape 7.2 allows remote attackers to...

Record: GHSA-p7cq-vpx5-5pp5
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`firefox` Red Hat:enterprise_linux:4::as From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox-debuginfo` Red Hat:enterprise_linux:4::as From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox` Red Hat:enterprise_linux:4::desktop From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox-debuginfo` Red Hat:enterprise_linux:4::desktop From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox` Red Hat:enterprise_linux:4::es From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox-debuginfo` Red Hat:enterprise_linux:4::es From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox` Red Hat:enterprise_linux:4::ws From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`firefox-debuginfo` Red Hat:enterprise_linux:4::ws From an advisory covering 10 CVEs	before 0:1.0.3-1.4.1	0:1.0.3-1.4.1
`devhelp` Red Hat:enterprise_linux:4::as From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-debuginfo` Red Hat:enterprise_linux:4::as From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4

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Affected packages
Package	Affected	Fixed
`devhelp-devel` Red Hat:enterprise_linux:4::as From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp` Red Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-debuginfo` Red Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-devel` Red Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp` Red Hat:enterprise_linux:4::es From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-debuginfo` Red Hat:enterprise_linux:4::es From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-devel` Red Hat:enterprise_linux:4::es From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp` Red Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-debuginfo` Red Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4
`devhelp-devel` Red Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs	before 0:0.9.2-2.4.4	0:0.9.2-2.4.4

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-1156 is a high vulnerability (CVSS 7.5) in Mozilla Firefox, published April 18, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.34%, the 83rd percentile. No source names a fixed version.

References

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