CVE-2012-2904: player.swf in LongTail JW Player 5.9 allows remote attackers to conduct cross-site scripting (XSS) attacks...

Security readout for executives and security teams

CVE-2012-2904 is a cross-site scripting issue in LongTail JW Player 5.9's player.swf. If an exposed site still serves this vulnerable Flash player, an attacker could cause script or HTML to run in a visitor's browser in that site's context. Evidence in the bundle does not show active exploitation. Exposure is most likely on older websites, CMS themes, media archives, or embedded assets that still host JW Player 5.9 player.swf. Modern sites without this SWF asset are unlikely to be affected. Treat this as a legacy web exposure cleanup item unless the vulnerable player is still publicly served on a high-trust or high-traffic site. Escalate if the asset is present on authenticated, customer, or payment-adjacent pages. Mitigation focus: Inventory public web assets for LongTail JW Player 5.9 player.swf.; Remove retired Flash player files from production web roots and CDNs.; Check vendor or archive guidance for a safe JW Player replacement path..

Prepared

Jun 24, 2026, 12:52 UTC (UTC+00:00)

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