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CVE-2021-25915

29
FAUCET Score

CVE-2021-25915 is a critical prototype pollution vulnerability affecting 'changeset' versions 0.0.1 through 0.2.5. This flaw allows an unauthenticated attacker to remotely cause a denial of service and potentially achieve remote code execution. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, its critical severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.0.1, < 0.2.6CPE matchmatch criteria
cpe:2.3:a:changeset_project:changeset:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.51%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0351 is in the 80th percentile among its peer group of 36,897 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: changesetFixed in: 0.2.5

Vendor Advisories (1)

npmGHSA-2gqw-q9r9-7f79critical

Changeset vulnerable to prototype pollution

May 24, 2022

References

github.com / eugeneware/changeset/commit/9e588844edbb9993b32e7366cc799262b4447f99
PatchThird Party Advisory
whitesourcesoftware.com / vulnerability-database/CVE-2021-25915
ExploitThird Party Advisory