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Critical 9.4Published Apr 29, 2025
CVE-2025-0520ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 9.4 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
- Weakness (CWE)
- CWE-434
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ShowDoc ShowDoc showdoc:showdoc (from the name) | before 2.8.7 | CNA record |
References
- https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585exploit
- https://github.com/star7th/showdoc/pull/1059issue-tracking
- https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585third-party-advisory
- https://www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rcethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.