CVE-2026-120203

ShowDoc 2.8.14 before 3.9.6 contains a code injection vulnerability in its Mock feature that allows authenticated users to execute shell commands through mockjs templates. Attackers can store a template via MockController::add with escaped parentheses that mockjs evaluates with eval(), then trigger it through MockController::infoByKey to run commands, as root in the official Docker image.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/LioTree/028af150fd991cf9924dd2c7d5912e54
https://github.com/star7th/showdoc
https://github.com/star7th/showdoc/blob/v3.9.5/mock/index.js#L42
https://github.com/star7th/showdoc/commit/5a2087a3f408f5266f61e9e2fb98845ef4788288
https://www.vulncheck.com/advisories/showdoc-2.8.14-before-3.9.6-code-injection-via-mock-templates

Configurations

No configuration.

History

31 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-31 18:17

Updated : 2026-11-02 19:35

NVD link : CVE-2026-120203

Mitre link : CVE-2026-120203

CVE.ORG link : CVE-2026-120203

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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