How severe is CVE-2022-4851?

CVE-2022-4851 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2022-4851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4851?

CVE-2022-4851 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-4851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-4851 published?

CVE-2022-4851 was published on 2022-12-29 and last updated on 2026-06-17.

CVE-2022-4851

CVE-2022-4851 is a medium-severity vulnerability in Usememos Memos with a CVSS 3.x base score of 5.3. 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-229.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-229
Affected product: Usememos Memos
Published: 2022-12-29
Last modified: 2026-06-17

Description

Improper Handling of Values in GitHub repository usememos/memos prior to 0.9.1.

Frequently asked questions

What is CVE-2022-4851?: Improper Handling of Values in GitHub repository usememos/memos prior to 0.9.1.
How severe is CVE-2022-4851?: CVE-2022-4851 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2022-4851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4851?: CVE-2022-4851 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-4851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-4851 published?: CVE-2022-4851 was published on 2022-12-29 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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