How severe is CVE-2021-40289?

CVE-2021-40289 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-40289 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40289?

CVE-2021-40289 affects Mm-wki Project Mm-wki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40289?

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

When was CVE-2021-40289 published?

CVE-2021-40289 was published on 2022-11-10 and last updated on 2026-06-17.

CVE-2021-40289

CVE-2021-40289 is a medium-severity vulnerability in Mm-wki Project Mm-wki with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mm-wki Project Mm-wki
Published: 2022-11-10
Last modified: 2026-06-17

Description

mm-wki v0.2.1 is vulnerable to Cross Site Scripting (XSS).

Frequently asked questions

What is CVE-2021-40289?: mm-wki v0.2.1 is vulnerable to Cross Site Scripting (XSS).
How severe is CVE-2021-40289?: CVE-2021-40289 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-40289 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40289?: CVE-2021-40289 affects Mm-wki Project Mm-wki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40289?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40289 published?: CVE-2021-40289 was published on 2022-11-10 and last updated on 2026-06-17.

References

https://github.com/phachon/mm-wiki/issues/319

Affected products (1)

cpe:2.3:a:mm-wki_project:mm-wki:0.2.1:*:*:*:*:*:*:*

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