What’s Vulnerable › Vulnerabilities

CVE-2021-37696: Sensitive information leak in MassDM of tmerc-cogs

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-11 · updated 2026-06-17
• Weakness: CWE-306

Description

tmerc-cogs are a collection of open source plugins for the Red Discord bot. A vulnerability has been found in the code that allows any user to access sensitive information by crafting a specific MassDM message. Issue is patched in commit 92325be650a6c17940cc52611797533ed95dbbe1. All users are advised to update to the current commit. As a workaround users may unload the MassDM cog or globally disable the `[p]massdm` command.

Affected products

• tmercswims tmerc-cogs: before 3.0 — fixed in 3.0

How to fix

Upgrade to a fixed version: tmercswims tmerc-cogs 3.0. Check the vendor advisory for mitigations.

References

• https://github.com/tmercswims/tmerc-cogs/commit/92325be650a6c17940cc5
• https://github.com/tmercswims/tmerc-cogs/security/advisories/GHSA-ffhm-9c8j-wx9h
• https://github.com/tmercswims/tmerc-cogs/commit/92325be650a6c17940cc5
• https://github.com/tmercswims/tmerc-cogs/security/advisories/GHSA-ffhm-9c8j-wx9h

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