Joplin: KaTeX `trust:true` enables URL-allowlist bypass leading to NTLMv2 credential theft via UNC path on Windows
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| laurent22 | joplin | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
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| Laurent 22 | Joplin |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.196% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Laurent 22
Laurent 22 joplin |
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| Vendors & Products |
Laurent 22
Laurent 22 joplin |
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| Description | 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 place a \href URL into rendered output without passing Joplin's normal URL allowlist. On Windows, clicking a link whose target is an attacker-controlled UNC path causes pathExists() to initiate SMB authentication and disclose the current user's NTLMv2 challenge-response without a warning. The unfiltered URL can also invoke other registered URL handlers, but the credential disclosure through KaTeX \href is the distinguishing demonstrated impact. This issue is fixed in version 3.7.2. | |
| Title | Joplin: KaTeX `trust:true` enables URL-allowlist bypass leading to NTLMv2 credential theft via UNC path on Windows | |
| Weaknesses | CWE-200 CWE-522 CWE-829 |
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| References |
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| Metrics |
cvssV3_1
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