How severe is CVE-2022-0432?

CVE-2022-0432 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-2022-0432 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-0432?

CVE-2022-0432 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-0432?

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

When was CVE-2022-0432 published?

CVE-2022-0432 was published on 2022-02-02 and last updated on 2026-06-17.

CVE-2022-0432

CVE-2022-0432 is a medium-severity vulnerability in Joinmastodon Mastodon 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-1321.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Joinmastodon Mastodon
Published: 2022-02-02
Last modified: 2026-06-17

Description

Prototype Pollution in GitHub repository mastodon/mastodon prior to 3.5.0.

Frequently asked questions

What is CVE-2022-0432?: Prototype Pollution in GitHub repository mastodon/mastodon prior to 3.5.0.
How severe is CVE-2022-0432?: CVE-2022-0432 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-2022-0432 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-0432?: CVE-2022-0432 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-0432?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-0432 published?: CVE-2022-0432 was published on 2022-02-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*

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