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TI-2020-16518 Aliases CVE-2020-27176GHSA-q367-49gp-hvp2

Mutation XSS exists in Mark Text through 0.16.2 that leads to Remote Code Execution.

Priority MEDIUM 45CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Mutation XSS exists in Mark Text through 0.16.2 that leads to Remote Code Execution. NOTE: this might be considered a duplicate of CVE-2020-26870; however, it can also be considered an issue in the design of the "source code mode" feature, which parses HTML even though HTML support is not one of the primary advertised roles of the product.

Why it matters now

EPSS 0.01884 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:marktext:marktext:*:*:*:*:*:*:*:*up to 0.16.2VulnerableMarkText
  • cpe:2.3:a:marktext:marktext:*:*:*:*:*:*:*:* Versions up to 0.16.2 Vulnerable ·MarkText

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27176
  2. 2026-10-03 Alias added: GHSA-q367-49gp-hvp2

References

Exploit 1

  • TI-2023-02174 MarkText DOM-Based Cross-site Scripting leading to Remote Code Execution CVSS 3.1CRITICAL 9.6
  • TI-2023-00951 MarkText WSH JScript code injection CVSS 3.1HIGH 7.8
  • TI-2021-10612 Mark Text through 0.16.3 allows attackers arbitrary command execution. CVSS 3.1CRITICAL 9.6
  • TI-2022-08820 Mark Text v0.16.3 was discovered to contain a DOM-based cross-site scripting (XSS)… CVSS 3.1CRITICAL 9.6
  • TI-2022-08068 MarkText through 0.16.3 does not sanitize the input of a mermaid block before rendering. CVSS 3.1CRITICAL 9.0
  • TI-2022-05560 Cross-site scripting in MarkText CVSS 3.1MEDIUM 5.4

Sources

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