8.8
HighCVSS 3.1 · from VulnCheck
CVE-2026-120203
ShowDoc 2.8.14 before 3.9.6 Code Injection via Mock Templates
ShowDoc · Code injection · CWE-94AffectedShowDoc
FixUpdate to 3.9.6 or newer
PublishedOct 31, 17:25 · VulnCheck
ScoredOct 31 · 8.8 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:04 UTC
What we know
No known exploitation. CISA KEV, checked 22:04 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker needs network access and an account. CVSS: network, low privileges.
A successful attack can read and change data and take the service down. CVSS: high impact on confidentiality, integrity and availability.
Description
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.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed inShowDoc2.8.14 – before 3.9.63.9.6
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known