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CVE-2020-7748

25
FAUCET Score

CVE-2020-7748 is a prototype pollution vulnerability affecting the @tsed/core package before version 5.65.7, specifically within its deepExtend function. This flaw allows an attacker to overwrite and pollute an object's prototype, potentially leading to arbitrary code execution or denial of service. With a CVSS score of 8.1 (HIGH), it presents a significant risk due to its network-based attack vector and high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.65.7CPE matchmatch criteria
cpe:2.3:a:ts.ed_project:ts.ed:*:*:*:*:*:node.js:*:*

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
1.72%
Probability of exploitation in next 30 days
EPSS Percentile
75.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0172 is in the 33rd percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @tsed/coreFixed in: 5.65.7

Vendor Advisories (1)

npmGHSA-77xq-cpvg-7xm2medium

Prototype pollution in @tsed/core

May 10, 2021

References

github.com / TypedProject/tsed/blob/production/packages/core/src/utils/deepExtends.ts%23L36
Broken LinkPatchThird Party Advisory
github.com / TypedProject/tsed/commit/1395773ddac35926cf058fc6da9fb8e82266761b
PatchThird Party Advisory
snyk.io / vuln/SNYK-JS-TSEDCORE-1019382
ExploitPatchThird Party Advisory