CVE-2025-0520 json
ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution
published last yr. modified 3d ago also EUVD-2025-12661 , GHSA-6jmr-r7p6-f5wr
- cvss
- 9.4
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2025-0520 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- last yr.
Exploit prediction
2.45% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.4 | 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 |
| CNA | 4.0 | 9.4 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | showdoc/showdoc | <2.8.7 |
2.8.7 |
Affected products
- ShowDoc ShowDoc
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/star7th/showdoc/pull/1059
issue-tracking, patch, web
-
github.com
/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585
exploit, web
-
cnvd.org.cn
/flaw/show/CNVD-2020-26585
third-party-advisory, web
-
vulncheck.com
/advisories/showdoc-unauthenticated-file-upload-rce
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2025-0520
advisory
-
github.com
/star7th/showdoc
package
Sources
- CVE List CVE-2025-0520
- GitHub Advisory GHSA-6jmr-r7p6-f5wr
- NVD CVE-2025-0520
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.