CVE-2021-41745: Showdoc File Upload Vulnerability

critical Affects showdoc/showdoc. Feed 2026.10.29.2, updated 2026-10-29; published 2021-10-25; advisory modified 2024-02-16.

Showdoc File Upload Vulnerability

Package: showdoc/showdoc Composer
Affected versions: <2.8.5
Fixed in: 2.8.5
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 1% (72.2th percentile)
Published: 2021-10-25
Source: osv.dev

References

CWE-287 CWE-434

NVD record showdoc/showdoc advisories

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Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
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Related advisories

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CVE-2022-0967 medium Stored Cross-site Scripting in showdoc same package: showdoc/showdoc
CVE-2025-0520 critical ShowDoc unrestricted file upload vulnerability same package: showdoc/showdoc
CVE-2022-1034 high Unrestricted Upload of File with Dangerous Type in ShowDoc same package: showdoc/showdoc
CVE-2022-0362 medium SQL Injection in showdoc same package: showdoc/showdoc
CVE-2018-19620 medium Showdoc Unauthenticated Access same package: showdoc/showdoc