Security readout for executives and security teams
This CVE describes multiple XSS flaws in the Joomla Multi Calendar component. An attacker could place malicious script or HTML into specific event-editing parameters. Business risk depends on whether the affected component is installed and reachable; the source bundle does not show confirmed active exploitation or a named vendor patch. Exposure is most likely on Joomla sites running the Multi Calendar component, especially version 4.0.2. The record says versions 4.8.5 and earlier may also be affected, but that is phrased as uncertain. Sites without com_multicalendar are not indicated as affected by the provided sources. Treat this as a targeted web-application cleanup item, not an emergency based on the provided evidence. Prioritize public Joomla sites using Multi Calendar, especially unsupported installations, because XSS can create user-session and trust risks. Mitigation focus: Inventory Joomla sites for the com_multicalendar component and its installed version.; Check vendor or maintainer guidance for an update, replacement, or removal path.; Disable or remove Multi Calendar if it is unnecessary or unsupported..
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-2013-5953 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
- multi-calendar-index-xss(91820)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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