How severe is CVE-2022-4811?

CVE-2022-4811 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2022-4811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4811?

CVE-2022-4811 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-4811?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-4811 published?

CVE-2022-4811 was published on 2022-12-28 and last updated on 2026-06-17.

CVE-2022-4811

CVE-2022-4811 is a high-severity vulnerability in Usememos Memos with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Usememos Memos
Published: 2022-12-28
Last modified: 2026-06-17

Description

Authorization Bypass Through User-Controlled Key vulnerability in usememos usememos/memos.This issue affects usememos/memos before 0.9.1.

Frequently asked questions

What is CVE-2022-4811?: Authorization Bypass Through User-Controlled Key vulnerability in usememos usememos/memos.This issue affects usememos/memos before 0.9.1.
How severe is CVE-2022-4811?: CVE-2022-4811 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2022-4811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4811?: CVE-2022-4811 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-4811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-4811 published?: CVE-2022-4811 was published on 2022-12-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:usememos:memos:*:*:*:*:*:*:*:*

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CVE-2022-4866 — Critical (CVSS 9.0): Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1.
CVE-2022-4865 — Critical (CVSS 9.0): Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1.

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