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TI-2026-57120 Aliases CVE-2026-82805GHSA-m8rm-322m-r9gv

Typora Mermaid Rendering cross site scripting

Priority MEDIUM 57CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting, Code execution
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00486 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Typora: 1.14.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Typora1.13.0; 1.13.1; 1.13.2; 1.13.3; 1.13.4; 1.13.5; 1.13.6; 1.13.7; 1.13.8; 1.14.0; 1.14.1; 1.14.2; 1.14.3; 1.14.4; 1.14.5; 1.14.61.14.8Patch availableCNA
  • Typora Vendor— Affected 1.13.0; 1.13.1; 1.13.2; 1.13.3; 1.13.4; 1.13.5; 1.13.6; 1.13.7; 1.13.8; 1.14.0; 1.14.1; 1.14.2; 1.14.3; 1.14.4; 1.14.5; 1.14.6 Fixed in 1.14.8 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:typora:typora:*:*:*:*:*:*:*:*——Typora
  • cpe:2.3:a:typora:typora:*:*:*:*:*:*:*:* Versions — — ·Typora

Remediation

  • Fix · CNA Typora Fixed in 1.14.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82805
  2. 2026-10-03 Alias added: GHSA-m8rm-322m-r9gv

References

Exploit 1

Patch 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences