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  4. CVE 2026 120203 showdoc 2814 before 396 code injection via mock
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Back to active CVEs
High · CVSS 8.7CVE-2026-120203

ShowDoc 2.8.14 before 3.9.6 Code Injection via Mock TemplatesCVE-2026-120203

Answer in brief

CVE-2026-120203 records a High severity (CVSS 8.7) vulnerability in ShowDoc 2.8.14 before 3.9.6 Code Injection via Mock Templates. The current sources do not mark it as known exploited. The current feed maps ShowDoc/ShowDoc (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 31, 2026Updated Oct 31, 2026Source checked Oct 31, 2026First seen by HOL Oct 31, 2026Material review Oct 31, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ShowDoc/ShowDoc (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ShowDoc/ShowDocgeneric>=2.8.14 <3.9.63.9.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ShowDoc/ShowDoc.
  2. 2Review the reported fix. Update ShowDoc/ShowDoc to 3.9.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 31, 2026

Sources and claim methodology

  • GitHub security advisorygist.github.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Konflux-ci: jq filter injection in github workflow issue managementAlso CWE-94
  • Konflux-ci: remote code execution via eval() in manifest scriptsAlso CWE-94

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-94
Source
CVE List V5
Source checked
Oct 31, 2026
References
5 linked sources
Open source record