CVE-2020-26286 is a critical arbitrary file upload vulnerability affecting HedgeDoc versions prior to 1.7.1. An unauthenticated attacker can exploit this flaw to upload malicious files, including HTML, JavaScript, and PHP, to the server's upload storage. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and a high impact on integrity, allowing for potential remote code execution or cross-site scripting. While there is no evidence of active exploitation, public exploit code, or significant community discussion, organizations are advised to patch to version 1.7.1, implement reverse proxy blocking for the /uploadimage endpoint, and restrict MIME types in their upload storage as immediate mitigations.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.7.1CPE matchmatch criteria | cpe:2.3:a:hedgedoc:hedgedoc:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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