PT-2026-6783 · Hedgedoc · Hedgedoc

Huseynkhanli · Published 2026-02-06 · Updated 2026-02-25 · CVE-2026-25642

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions HedgeDoc versions prior to 1.10.6

Description HedgeDoc is a real-time, collaborative, markdown notes application. Versions before 1.10.6 had a permissive Content-Security-Policy for files served under the /uploads/ endpoint. This allowed for the hosting of malicious interactive web content, such as fake login forms, using SVG files. The /uploads/ API endpoint was affected.

Recommendations Update to version 1.10.6 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-25642

GHSA-X74J-JMF9-534W

Affected Products

Hedgedoc

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25642.json · Exploit
• https://github.com/hedgedoc/hedgedoc/commit/74daa0e7a1cbfafd9aeb255eaf064dfe47cd401c · Patch
• https://github.com/hedgedoc/hedgedoc/commit/b930fe04cee92cd4723044030bb59c36781c7137 · Patch
• https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-x74j-jmf9-534w · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-25642 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25642 · Security Note
• https://github.com/hedgedoc/hedgedoc/releases/tag/1.10.6 · Note
• https://t.me/cveNotify/153157 · Telegram Post
• https://t.me/CVEtracker/43964 · Telegram Post
• https://twitter.com/CVEnew/status/2019864520944922737 · Twitter Post