CVE-2026-82805
Typora Mermaid Rendering cross site scripting
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 31, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 31, 2026
Description
A vulnerability was found in Typora up to 1.13.8/1.14.6. This vulnerability affects unknown code of the component Mermaid Rendering Engine. The manipulation of the argument classDef/style results in cross site scripting. The attack may be launched remotely. The exploit has been made public and could be used. Upgrading to version 1.14.8 is able to resolve this issue. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Typoran/a |
|
References
- VDB-397225 | Typora Mermaid Rendering cross site scriptingvdb-entrytechnical-description
- VDB-397225 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-82805 | CVE Analysis and Reportthird-party-advisory
- Submit #863528 | Typora <=1.13.7 Code Injectionthird-party-advisory
- https://github.com/zzk6th/cve/issues/5exploitissue-tracking
- https://typora.io/releases/allpatch
- https://typora.io/#downloadpatch
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