shd101wyy Markdown Preview Enhanced up to 0.8.27 os command injection

Summaryinfo

A vulnerability was found in shd101wyy Markdown Preview Enhanced up to 0.8.27 and classified as critical. This impacts an unknown function. Such manipulation leads to os command injection. This vulnerability is referenced as CVE-2026-49492. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in shd101wyy Markdown Preview Enhanced up to 0.8.27 and classified as critical. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Markdown Preview Enhanced before 0.8.28 opens external files and links from the preview through a shell and does not validate untrusted inputs taken from the markdown document - the diagram filename attribute, imported file paths, and the latex_engine code-chunk attribute. On Windows, a crafted markdown document can inject operating system commands that execute when the document is previewed. Fixed in 0.8.28 by passing these inputs as literal arguments instead of through a shell and validating them before use.

The weakness was published by byte16384. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-49492 since 05/31/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 0.8.28 eliminates this vulnerability.

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Productinfo

Vendor

• shd101wyy

Name

• Markdown Preview Enhanced

Version

• 0.8.0
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4
• 0.8.5
• 0.8.6
• 0.8.7
• 0.8.8
• 0.8.9
• 0.8.10
• 0.8.11
• 0.8.12
• 0.8.13
• 0.8.14
• 0.8.15
• 0.8.16
• 0.8.17
• 0.8.18
• 0.8.19
• 0.8.20
• 0.8.21
• 0.8.22
• 0.8.23
• 0.8.24
• 0.8.25
• 0.8.26
• 0.8.27

CPE 2.3info

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CPE 2.2info

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