What is CVE-2022-4803?

CVE-2022-4803 is a high-severity vulnerability in Usememos Memos, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2022-12-28.

How severe is CVE-2022-4803?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Usememos Memos

CVE-2022-4803

Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.1.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2022-12-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (57.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · 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/3556ae4e651d9443dc3bb8a170dd3cc726517a53 (Patch, Third Party Advisory)
huntr.dev/bounties/0fba72b9-db10-4d9f-a707-2acf2004a286 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-4803?: CVE-2022-4803 is a high-severity vulnerability in Usememos Memos, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2022-12-28.
How severe is CVE-2022-4803?: High severity. CVSS v3 base score is 8.8 out of 10.