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TI-2021-18398 Aliases CVE-2021-41745GHSA-4286-h47h-m5v6

ShowDoc 2.8.3 ihas a file upload vulnerability, where attackers can use the vulnerability to obtain server permissions.

Priority MEDIUM 45CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-434 and CWE-287.

Summary

ShowDoc 2.8.3 ihas a file upload vulnerability, where attackers can use the vulnerability to obtain server permissions.

Why it matters now

EPSS 0.0139 72nd percentileScored 2026-11-07
Fix Fixed showdoc/showdoc (Packagist): 2.8.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—showdoc/showdoc (Packagist)before 2.8.52.8.5Patch availableGHSA-4286-h47h-m5v6
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • showdoc/showdoc (Packagist) Vendor— Affected before 2.8.5 Fixed in 2.8.5 Patch available GHSA-4286-h47h-m5v6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:showdoc:showdoc:2.8.3:*:*:*:*:*:*:*2.8.3Vulnerablestar7th
  • cpe:2.3:a:showdoc:showdoc:2.8.3:*:*:*:*:*:*:* Versions 2.8.3 Vulnerable ·star7th

Remediation

  • Fix · GHSA-4286-h47h-m5v6 showdoc/showdoc (Packagist) Fixed in 2.8.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41745
  2. 2026-10-03 Alias added: GHSA-4286-h47h-m5v6

References

Advisory 3

Other 2

  • TI-2021-14768 Unrestricted File Upload in ShowDoc v2.9.5 allows remote attackers to execute arbitrary… CVSS 3.1CRITICAL 9.8
  • TI-2022-00287 SQL Injection in star7th/showdoc CVSS 3.1CRITICAL 9.8
  • TI-2021-03036 Cross-Site Request Forgery (CSRF) in star7th/showdoc CVSS 3.1HIGH 8.8
  • TI-2021-02908 Cross-Site Request Forgery (CSRF) in star7th/showdoc CVSS 3.1HIGH 8.8
  • TI-2022-00334 Unrestricted Upload of File with Dangerous Type in star7th/showdoc CVSS 3.1HIGH 7.8
  • TI-2022-00931 There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in star7th/showdoc CVSS 3.1HIGH 7.2
See all 40 →

Sources

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