Stored DOM XSS in Apryse WebViewer via PDF annotation Author (/T) field
CVE-2025-70401 is a high-severity stored DOM-based XSS in Apryse WebViewer (formerly PDFTron) triggered via a crafted PDF annotation author field (/T). The attacker embeds script payloads in the annotation “Author” name; when the PDF is opened in WebViewer and the victim interacts with the notes UI (reported as “when a victim types a character in notes”), the author string is processed through React’s internal he() helper and then assigned to innerHTML without proper encoding/sanitization, resulting in script execution in the WebViewer origin.
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Exploits
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Recent activity
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A script injection issue involving the “Author” field of a PDF comment in Apryse WebViewer, where user interaction (typing a character) triggers script execution and credential theft.
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 high-severity stored DOM XSS in Apryse WebViewer triggered by a malicious PDF annotation author (/T) field that propagates into innerHTML during React rendering, causing repeated execution on re-render events.
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Cross-references every affected SKU, including bundled OEM variants.
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