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CVE-2026-49449 Joplin: KaTeX `trust:true` enables URL-allowlist bypass leading to NTLMv2 credential theft via UNC path on Windows

🗓️ 21 Sep 2026 20:52:11Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 16 Views

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. From 1.4.0 until 3.7.2, packages/renderer/MdToHtml/rules/katex.ts enables KaTeX's trust option for note content, allowing a note author to pl...

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Affected
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circl
Circl
CVE-2026-49449
21 Sep 202621:43
circl
cve
CVE
CVE-2026-49449
21 Sep 202620:52
cve
euvd
EUVD
EUVD-2026-84168
21 Sep 202620:52
euvd
nvd
NVD
CVE-2026-49449
21 Sep 202621:17
nvd
[
  {
    "vendor": "laurent22",
    "product": "joplin",
    "versions": [
      {
        "version": ">= 1.4.0, < 3.7.2",
        "status": "affected"
      }
    ]
  }
]

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21 Sep 2026 20:52Current
CVSS 3.12.5
16