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Fencer Vulns
high 8.1

CVE-2022-4803 json

Authorization Bypass Through User-Controlled Key in usememos/memos

published 2022-12-28 3 y ago modified 2026-06-17 4 mo ago also GHSA-mfmp-8mqg-q4wm , GO-2023-1291 , EUVD-2022-7686

cvss
8.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

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

Patch / fix

  • go github.com/usememos/memos 0.9.1
  • usememos usememos/memos 0.9.1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.87% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/0fba72b9-db10-4d9f-a707-2acf2004a286 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 8.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/usememos/memos
<0.9.1
0.9.1

Affected products

  • usememos usememos/memos

Classification

Weakness
  • CWE-639 Authorization Bypass Through User-Controlled Key
  • CWE-284 Improper Access Control

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.