What is CVE-2022-4686?

CVE-2022-4686 is a critical-severity vulnerability in Usememos Memos, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2022-12-23.

How severe is CVE-2022-4686?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Usememos Memos

CVE-2022-4686

Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.0.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2022-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.2th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.2% 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: 0.008 · change: +0.000

Affected products

Usememos Memos
Usememos Usememos/memos — versions unspecified

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

github.com/usememos/memos/commit/dca35bde877aab6e64ef51b52e590b5d48f692f9 (Patch, Third Party Advisory)
huntr.dev/bounties/caa0b22c-501f-44eb-af65-65c315cd1637 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-4686?: CVE-2022-4686 is a critical-severity vulnerability in Usememos Memos, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2022-12-23.
How severe is CVE-2022-4686?: Critical severity. CVSS v3 base score is 9.8 out of 10.