Vulnerability intelligence
CVE-2025-0520
An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution.This issue affects ShowDoc: before 2.8.7.
CVSS Score
9.4
Critical
EPSS — Exploit Probability
1.0%
Riskier than 59% of all CVEs
Exploitation
Not in CISA KEV
No federal exploitation record
Remediation
Patch available
Vendor fix published
2 articles across 2 outlets · first covered Apr 14, 2026 · latest Apr 14, 2026
Coverage timeline
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ShowDoc Flaw CVE-2025-0520 Exposes Thousands to RCE Attackssecurityaffairs.com · Apr 14, 2026
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ShowDoc flaw CVE-2025-0520 exploited, hackers drop web shellsthehackernews.com · Apr 14, 2026