Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-20087

28
FAUCET Score

CVE-2021-20087 is a high-severity prototype pollution vulnerability affecting jquery-deparam version 0.5.1. This flaw allows an authenticated attacker to inject properties into Object.prototype, potentially leading to remote code execution or denial of service. While the CVSS score is 8.8, indicating a significant risk, there is currently no evidence of active exploitation, public exploit code, or community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.5.1CPE matchmatch criteria
cpe:2.3:a:acemetrix:jquery-deparam:0.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 78th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Vendor Advisories (1)

npmGHSA-xg68-chx2-253ghigh

Prototype Pollution in jquery-deparam

May 24, 2021

References

github.com / RetireJS/retire.js/blob/6da45fcb6a3425e55ee8181b2ac35168879bf086/repository/jsrepository-master.json
github.com / BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md
ExploitThird Party Advisory