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MEDIUM severity

usememos/memos vulnerable Improper Restriction of Excessive Authentication AttemptsGHSA-qrrf-xvcf-p64q

MEDIUMFix: usememos/memos@3556ae4

GHSA-qrrf-xvcf-p64q is a medium-severity (CVSS 4.3) CWE-307 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.

Also known asCVE-2022-4797GO-2022-1244
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 5, 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 GHSA-qrrf-xvcf-p64q.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs55th percentile — riskier than 55% of all scored CVEsHighest risk
0.00%0.42%0.84%1.26%0.2%0.8%May 26Sep 26Nov 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

In usememos/memos 0.9.0 and prior, an attacker can delete other users' posts via post id, which can be done via brute force.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/usememos/memosall versions0.9.1go get github.com/usememos/memos@v0.9.1

Affected Products

1 product · 1 configurations
Application
memosusememos
< 0.9.1
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 Restriction of Excessive Authentication Attempts in GitHub repo…

huntr.devNVDJan 2023

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 0.9.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qrrf-xvcf-p64q is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

In usememos/memos 0.9.0 and prior, an attacker can delete other users' posts via post id, which can be done via brute force.
O3 Security · Impact-Aware SCA

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usememos/memos vulnerable Improper Restriction of…