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HIGH severity

CVE-2022-4689 — memos

HIGHFix: usememos/memos@dca35bd

CVE-2022-4689 is a high-severity (CVSS 8.3) CWE-284 vulnerability in github.com/usememos/memos. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for github.com/usememos/memos — see the affected versions and patch details below.

Improper Access Control in usememos/memos

Also known asGHSA-w57v-6xp4-rm2vGO-2022-1191
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2022-4689.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk+0.05%
Lower risk than most CVEs56th percentile — riskier than 56% of all scored CVEsHighest risk
0.00%0.43%0.86%1.29%0.3%0.8%May 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐹github.com/usememos/memos

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

usememos/memos is an open-source, self-hosted memo hub with knowledge management and socialization. Versions prior to 0.9.0 improperly maintain access control allowing an attacker to take over an account by changing header values in the HTTP request.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/usememos/memosall versions0.9.0go get github.com/usememos/memos@v0.9.0

Affected Products

1 product · 1 configurations
Application
memosusememos
< 0.9.0
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Improper Access Control in GitHub repository usememos/memos prior to 0.9…

huntr.devNVDDec 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/usememos/memos, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/usememos/memos to 0.9.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-4689 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

usememos/memos is an open-source, self-hosted memo hub with knowledge management and socialization. Versions prior to 0.9.0 improperly maintain access control allowing an attacker to take over an account by changing header values in the HTTP request.
O3 Security · Impact-Aware SCA

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CVE-2022-4689: memos — Fixed in 0.9.0