What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-05 · updated 2026-06-17
• Weakness: CWE-20

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

Affected products

• python-discord bot: before 67390298852513d13e0213870e50fb3cff1424e0 — fixed in 67390298852513d13e0213870e50fb3cff1424e0

How to fix

Upgrade to a fixed version: python-discord bot 67390298852513d13e0213870e50fb3cff1424e0. Check the vendor advisory for mitigations.

References

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

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