CVE-2009-1306: n/a vulnerability

CVE-2009-1306: The jar: URI implementation in Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey does not follow the...

The jar: URI implementation in Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey does not follow the Content-Disposition header of the inner URI, which allows remote attackers to conduct cross-site scripting (XSS) attacks and possibly other attacks via an uploaded .jar file with a "Content-Disposition: attachment" designation.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:04 UTC (UTC+00:00)

Security readout for executives and security teams

Older Mozilla clients could mishandle JAR content marked as an attachment. A malicious file uploaded to a site might execute script in a victim's browser context instead of being treated as a download, creating cross-site scripting risk. Exposure is most likely in legacy environments still running affected Mozilla-era clients or validating historical Linux package baselines. Modern supported browsers are unlikely to be affected by this 2009 issue, but the provided data does not define all Thunderbird or SeaMonkey fixed versions. Treat this as a legacy exposure cleanup item, not a current emergency unless old Mozilla clients remain in production. Prioritize asset discovery and removal of unsupported browsers on systems handling trusted web sessions. Mitigation focus: Upgrade Firefox to 3.0.9 or later where applicable.; Check Mozilla and distribution advisories for fixed Thunderbird and SeaMonkey packages.; Remove unsupported legacy Mozilla clients from managed endpoints..

Prepared: Jun 28, 2026, 11:04 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 22, 2009, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

9Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
oval:org.mitre.oval:def:6021CVE reference · vdb-entry, signature
FEDORA-2009-3875CVE reference · vendor-advisory, x_refsource_FEDORA
oval:org.mitre.oval:def:6710CVE reference · vdb-entry, signature
oval:org.mitre.oval:def:10150CVE reference · vdb-entry, signature
https://bugzilla.mozilla.org/show_bug.cgi?id=474536CVE reference · x_refsource_CONFIRM
USN-764-1CVE reference · vendor-advisory, x_refsource_UBUNTU
oval:org.mitre.oval:def:6194CVE reference · vdb-entry, signature
oval:org.mitre.oval:def:6312CVE reference · vdb-entry, signature

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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