Arbitrary file upload in Showdoc
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
EPSS exploit prediction
EPSS: 0.026 (85.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.026 · change: +0.001
Affected products
- Showdoc — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585 (exploit)
- github.com/star7th/showdoc/pull/1059 (issue-tracking, patch)
- www.cnvd.org.cn/flaw/show/CNVD-2020-26585 (third-party-advisory)
- www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rce (third-party-advisory)
Frequently asked questions
- What is CVE-2025-0520?
- CVE-2025-0520 is a vulnerability in Showdoc, classified under Unrestricted Upload of File with Dangerous Type. Published 2025-04-29.
- Is CVE-2025-0520 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.