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CVE-2021-23624

29
FAUCET Score

CVE-2021-23624 is a critical type confusion vulnerability affecting versions of the dotty package prior to 0.1.2. This flaw allows for a bypass of a previous security fix (CVE-2021-25912) when user-supplied keys in path parameters are arrays. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.1.2CPE matchmatch criteria
cpe:2.3:a:dotty_project:dotty:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 52nd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: dottyFixed in: 0.1.2

Vendor Advisories (1)

npmGHSA-6g47-63mv-qpghmedium

Prototype Pollution in dotty

Nov 8, 2021

References

github.com / deoxxa/dotty/commit/88f61860dcc274a07a263c32cbe9d44c24ef02d7
PatchThird Party Advisory
snyk.io / vuln/SNYK-JS-DOTTY-1577292
ExploitMitigationPatchThird Party AdvisoryVDB Entry