Critical severityNVD Advisory· Published Apr 29, 2025· Updated Apr 15, 2026

CVE-2025-0520

Description

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.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
showdoc/showdocPackagist	< 2.8.7	2.8.7

Patches

d7b0bca689b3

https://github.com/star7th/showdocvia osv

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

github.com/advisories/GHSA-6jmr-r7p6-f5wrghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-0520ghsaADVISORY
github.com/star7th/showdoc/pull/1059nvdWEB
github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585nvdWEB
www.cnvd.org.cn/flaw/show/CNVD-2020-26585nvdWEB
www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rcenvdWEB

News mentions

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cvss	0.585
epss	0.002
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000