Is CVE-2020-7741 in the CISA KEV catalog?

No. CVE-2020-7741 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-7741?

CVE-2020-7741 has a CVSS v3 base score of 9.9 (CRITICAL).

What is the EPSS score for CVE-2020-7741?

CVE-2020-7741 has an EPSS score of 1.48% (71th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-7741?

Upgrade hello.js to 1.18.6 or later.

CVE & CISA-KEV Catalog

CVE-2020-7741

CRITICALEPSS 71th pctl

9.9

CVSS v3

NVD

Description

This affects the package hellojs before 1.18.6. The code get the param oauth_redirect from url and pass it to location.assign without any check and sanitisation. So we can simply pass some XSS payloads into the url param oauth_redirect, such as javascript:alert(1).

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

hello.jsNVD

Affected:< 1.18.6Fixed in:1.18.6CVE-2020-7741derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

1.48%probability of exploitation in 30 days

71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

snyk.io

Other references1

github.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.