CVE-2009-3012: n/a vulnerability

CVE-2009-3012: Mozilla Firefox 3.0.13 and earlier, 3.5, 3.6 a1 pre, and 3.7 a1 pre does not properly block data: URIs in L...

Mozilla Firefox 3.0.13 and earlier, 3.5, 3.6 a1 pre, and 3.7 a1 pre does not properly block data: URIs in Location headers in HTTP responses, which allows remote attackers to conduct cross-site scripting (XSS) attacks via vectors related to (1) injecting a Location header that contains JavaScript sequences in a data:text/html URI or (2) entering a data:text/html URI with JavaScript sequences when specifying the content of a Location header. NOTE: the JavaScript executes outside of the context of the HTTP site.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 23:26 UTC (UTC+00:00)

Security readout for executives and security teams

This older Firefox issue allowed a malicious site or redirect response to make Firefox run script from a data: URI carried in a Location header. The bundle does not provide a CVSS score, confirmed patch level, or active exploitation evidence. Exposure is mainly organizations still allowing very old Firefox builds named in the CVE title. Modern, supported browsers are not identified as affected in the supplied bundle. Treat this as a legacy-browser hygiene issue unless affected Firefox versions still exist. If they do, removal should be prioritized because the flaw is remotely triggerable through web content. Mitigation focus: Inventory endpoints for the Firefox versions named in the CVE title.; Retire or block affected legacy Firefox versions from corporate environments.; Move users to vendor-supported browser versions..

Prepared: Jun 28, 2026, 10:26 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: Aug 31, 2009, 16:00 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

1Source 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

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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