What is CVE-2021-37697?

CVE-2021-37697 is a high-severity vulnerability in Tmerc-Cogs Project, classified under Missing Authentication for Critical Function. CVSS score: 7.1/10. Published 2021-08-11.

How severe is CVE-2021-37697?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Tmerc-Cogs Project

CVE-2021-37697

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 membership event message. Issue is patched in commit d63c49b4cfc30c795336e4fff08cba3795e0fcc0. As a workaround users may unload the Welcome cog.

Vulnerability class: Broken Authentication

Published 2021-08-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.0th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tmerc-Cogs Project
Tmercswims Tmerc-Cogs — versions < d63c49b4cfc30c795336e4fff08cba3795e0fcc0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/tmercswims/tmerc-cogs/security/advisories/GHSA-77xv-8c2x-j96j (Patch, Third Party Advisory)
github.com/tmercswims/tmerc-cogs/commit/d63c49b4cfc30c795336e4fff08cba3795e0fcc0 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-37697?: CVE-2021-37697 is a high-severity vulnerability in Tmerc-Cogs Project, classified under Missing Authentication for Critical Function. CVSS score: 7.1/10. Published 2021-08-11.
How severe is CVE-2021-37697?: High severity. CVSS v3 base score is 7.1 out of 10.