CVE-2026-82805

Typora Mermaid Rendering cross site scripting

MEDIUM
4.3
CVSS Score
Published: August 31, 2026 at 03:45 PM UTC
Updated: August 31, 2026 at 09:06 PM UTC
1 product affected across 1 vendorTypora

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/397225
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/397225/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-82805
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/863528
ExploitIssue Tracking
Source: cverecord
https://github.com/zzk6th/cve/issues/5
Patch
Source: cverecord
https://typora.io/releases/all
Patch
Source: cverecord
https://typora.io/#download

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79CWE-94

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