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A stored cross-site scripting vulnerability exists in webplugins.foxit.com within an embedded calculator component’s window.postMessage handler. The handler performs origin validation incorrectly by checking an attacker-controlled field (t.data.origin) rather than the browser-enforced event.origin. It then uses attacker-supplied data to set an externalPath value that is directly assigned as the source of a loaded script, enabling injection of a remote <script> into a trusted Foxit domain context when a crafted postMessage is received.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A weakness in Foxit web plugins where a forged/fake message can cause the plugin to execute attacker-controlled script.
One of several reported vulnerabilities affecting Foxit and Apryse PDF platforms, potentially enabling impacts such as account takeover, session hijacking, data exfiltration, and arbitrary JavaScript execution.
A medium-severity DOM XSS/script injection issue in Foxit’s embedded calculator on webplugins.foxit.com caused by validating attacker-controlled message data instead of the browser-enforced postMessage origin, enabling script injection into a trusted Foxit origin.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.