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CVE-2022-0432

26
FAUCET Score

CVE-2022-0432 describes a Prototype Pollution vulnerability affecting Mastodon versions prior to 3.5.0. This flaw allows an attacker to inject arbitrary properties into JavaScript object prototypes, potentially leading to denial of service, information disclosure, or cross-site scripting. Rated as Medium severity with a CVSS score of 6.1, the vulnerability requires user interaction (UI:R) and can be exploited over the network (AV:N). While the attack complexity is low (AC:L), the potential impact is limited to partial confidentiality and integrity loss (C:L/I:L/A:N). Currently, there is no evidence of active exploitation, nor is it listed on CISA's KEV catalog. While no Metasploit or ExploitDB modules exist, Nuclei templates are available, indicating some exploitability. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.0CPE matchmatch criteria
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.4HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.03%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2022-0432 · Feb 6, 2022
This CVE's current EPSS score of 0.0403 is in the 95th percentile among its peer group of 26,219 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / mastodon/mastodon/commit/4d6d4b43c6186a13e67b92eaf70fe1b70ea24a09
PatchThird Party Advisory
huntr.dev / bounties/d06da292-7716-4d74-a129-dd04773398d7
ExploitThird Party Advisory