Is CVE-2021-33502 in the CISA KEV catalog?

No. CVE-2021-33502 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33502?

CVE-2021-33502 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-33502?

CVE-2021-33502 has an EPSS score of 1.70% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33502?

Upgrade node-got on debian 11 to 11.8.1+~cs53.13.17-3 or later.

CVE & CISA-KEV Catalog

CVE-2021-33502

HIGHEPSS 74th pctl

7.5

CVSS v3

NVD

Description

The normalize-url package before 4.5.1, 5.x before 5.3.1, and 6.x before 6.0.1 for Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data: URLs.

CWE-1333

How to fix

Remediation Available

node-gotDebian

Fixed in:11.8.1+~cs53.13.17-3CVE-2021-33502

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

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.70%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Third-Party Advisory2

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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.