TI-2017-08587 Aliases CVE-2017-11593 GHSA-wq8m-m73h-f33g

Cross-site scripting (XSS) vulnerability in the Markdown Preview Plus extension before…

LOW 29CWE-79Published 2017-07-24 · Updated 2024-08-05

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Cross-site scripting (XSS) vulnerability in the Markdown Preview Plus extension before 0.5.7 for Chrome allows remote attackers to inject arbitrary web script or HTML into some web applications via the upload and display of crafted text, markdown, or rst files that are designed to be viewed in the browser as plain text, but that will be converted to HTML without proper sanitization.

Why it matters now

EPSS 0.00764 55th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ooso:markdown_preview_plus::::::chrome::*	up to 0.4.5	Vulnerable	Ooso

cpe:2.3:a:ooso:markdown_preview_plus:*:*:*:*:*:chrome:*:* Versions up to 0.4.5 Vulnerable ·Ooso

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2017-11593
2026-10-03 Alias added: GHSA-wq8m-m73h-f33g

References

Exploit 1

https://github.com/volca/markdown-preview/issues/60

Patch 1

https://github.com/volca/markdown-preview/commit/1181f044a5457d5e1ac35804ecd84e05977f1920

Sources

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