Vulnerability · Published Nov 5, 2021 · Assigned by GitHub_M

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

Medium 4.3

In plain English

A medium-severity improper input validation in bot from python-discord. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.8%top 44.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
python-discord	bot	< 67390298852513d13e0213870e50fb3cff1424e0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

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