CVE-2009-1302

The browser engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and...

5.0 Medium

The browser engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.16 allows remote attackers to cause a denial of service (application crash) and possibly trigger memory corruption via vectors related to (1) nsAsyncInstantiateEvent::Run, (2) nsStyleContext::Destroy, (3) nsComputedDOMStyle::GetWidth, (4) the xslt_attributeset_ImportSameName.html test case for the XSLT stylesheet compiler, (5) nsXULDocument::SynchronizeBroadcastListener, (6) IsBindingAncestor, (7) PL_DHashTableOperate and nsEditor::EndUpdateViewBatch, and (8) gfxSkipCharsIterator::SetOffsets, and other vectors.

Exploit likelihood

2.90%Down 1.5 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2009-1302
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-1302
Updated: 2026-11-02

EUVDEUVD-2009-1300 No score

Record: EUVD-2009-1300
Updated: 2026-11-03

GitHub AdvisoriesGHSA-r98g-pww2-x9wj No score

The browser engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and...

Record: GHSA-r98g-pww2-x9wj
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10071-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:14572-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`xulrunner` Debian:5.0 From an advisory covering 11 CVEs	before 1.9.0.9-0lenny2, plus listed versions 1.9.0.5-11.9.0.6-11.9.0.7-0lenny11.9.0.7-0lenny21.9.0.7-11.9.0.8-1	1.9.0.9-0lenny2
`icedove` Debian:5.0 From an advisory covering 19 CVEs	before 2.0.0.22-0lenny1, plus listed versions 2.0.0.19-12.0.0.19-1+kbsd	2.0.0.22-0lenny1
`firefox` Red Hat:enterprise_linux:4::as From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox-debuginfo` Red Hat:enterprise_linux:4::as From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox` Red Hat:enterprise_linux:4::desktop From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox-debuginfo` Red Hat:enterprise_linux:4::desktop From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox` Red Hat:enterprise_linux:4::es From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox-debuginfo` Red Hat:enterprise_linux:4::es From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox` Red Hat:enterprise_linux:4::ws From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4
`firefox-debuginfo` Red Hat:enterprise_linux:4::ws From an advisory covering 12 CVEs	before 0:3.0.9-1.el4	0:3.0.9-1.el4

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Affected packages
Package	Affected	Fixed
`xulrunner` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-debuginfo` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-devel` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-devel-unstable` Red Hat:enterprise_linux:5::client_workstation From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`firefox` Red Hat:enterprise_linux:5::client From an advisory covering 12 CVEs	before 0:3.0.9-1.el5	0:3.0.9-1.el5
`firefox-debuginfo` Red Hat:enterprise_linux:5::client From an advisory covering 12 CVEs	before 0:3.0.9-1.el5	0:3.0.9-1.el5
`xulrunner` Red Hat:enterprise_linux:5::client From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-debuginfo` Red Hat:enterprise_linux:5::client From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`firefox` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:3.0.9-1.el5	0:3.0.9-1.el5
`firefox-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:3.0.9-1.el5	0:3.0.9-1.el5
`xulrunner` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-devel` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`xulrunner-devel-unstable` Red Hat:enterprise_linux:5::server From an advisory covering 12 CVEs	before 0:1.9.0.9-1.el5	0:1.9.0.9-1.el5
`MozillaFirefox` openSUSE:Tumbleweed From an advisory covering 899 CVEs	before 50.1.0-1.1	50.1.0-1.1
`firefox-esr` openSUSE:Tumbleweed From an advisory covering 1860 CVEs	before 128.5.1-1.1	128.5.1-1.1

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-2009-1302 is a medium vulnerability (CVSS 5.0) in Mozilla Firefox, published April 22, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.90%, the 87th percentile. No source names a fixed version.

References

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