Security readout for executives and security teams
This is an old cross-site scripting issue in the TYPO3 Calendar Base extension. A vulnerable site could let an attacker inject script or HTML through calendar search parameters, but the CVE specifically ties impact to Internet Explorer 6 users. Exposure is most likely on legacy TYPO3 deployments still running the cal extension before 1.1.1, especially if they serve users with Internet Explorer 6 compatibility requirements. Treat as a legacy cleanup priority unless affected TYPO3 systems are internet-facing or business-critical. The business risk is user-session compromise or malicious content injection on vulnerable pages. Mitigation focus: Upgrade Calendar Base (cal) to version 1.1.1 or later.; Review TYPO3-SA-2009-003 and the cal 1.1.1 release reference.; Retire or isolate legacy TYPO3 instances that cannot be updated..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2009-4804 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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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
Products and packages named in the record
CWE details
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