PT-2026-3877 · Docmost+1 · Docmost+1

Arthurgervais + 1 · Publicado 2026-01-21 · Atualizado 2026-02-17 · CVE-2026-23630

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Média

Vetor base

AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Name of the Vulnerable Software and Affected Versions Docmost versions 0.3.0 through 0.23.2

Description Docmost is collaborative wiki and documentation software. Versions 0.3.0 through 0.23.2 are susceptible to stored Cross-Site Scripting (XSS) due to improper sanitization when rendering Mermaid code blocks. The mermaid.render() function is used to render diagrams, and the resulting SVG/HTML is injected into the Document Object Model (DOM) using dangerouslySetInnerHTML without appropriate sanitization. Mermaid’s %%{init}%% directives can override security settings and enable HTML labels, allowing arbitrary HTML and JavaScript execution for anyone viewing the diagrams.

Recommendations Update to version 0.24.0 or later.

Exploit

Correção

XSS

Improper Encoding or Escaping of Output

Enumeração de Fraquezas

CWE-79

CWE-116

Identificadores relacionados

CVE-2026-23630

GHSA-R4HJ-MC62-JMWJ

Produtos afetados

Docmost

Mermaid

Referências · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23630.json · Exploit
• https://github.com/docmost/docmost/security/advisories/GHSA-r4hj-mc62-jmwj · Aviso do Fabricante
• https://github.com/docmost/docmost/commit/cb9f27da9a8b4940760e37e5238a1eb91e427daf · Correção
• https://github.com/docmost/docmost/releases/tag/v0.24.0 · Nota
• https://t.me/CVEtracker/42710 · Publicação no Telegram
• https://osv.dev/vulnerability/CVE-2026-23630 · Aviso do Fabricante
• https://twitter.com/VulmonFeeds/status/2014199981641494699 · Publicação no Twitter
• https://t.me/cveNotify/149491 · Publicação no Telegram
• https://nvd.nist.gov/vuln/detail/CVE-2026-23630 · Nota de Segurança
• https://t.me/cveNotify/152207 · Publicação no Telegram
• https://twitter.com/CVEnew/status/2014116175756566696 · Publicação no Twitter