CVE-2026-25642
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
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3Tags
Description
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.6, files served below the /uploads/ endpoint did not use a more strict security-policy. This resulted in a too open Content-Security-Policy and furthermore opened the possibility to host malicious interactive web content (such as fake login forms) using SVG files. This vulnerability is fixed in 1.10.6.
Analysis
HedgeDoc prior to version 1.10.6 allows attackers to bypass content security policies on files served from the /uploads/ endpoint, enabling them to host malicious interactive content such as fake login forms via SVG files. This network-based attack requires user interaction but can lead to credential theft or social engineering attacks. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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