Is CVE-2021-47208 in the CISA KEV catalog?

No. CVE-2021-47208 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-47208?

CVE-2021-47208 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-47208?

CVE-2021-47208 has an EPSS score of 0.55% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47208?

Upgrade libmojolicious-perl on debian 12 to 9.21+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-47208

MEDIUM

4.3

CVSS v3

NVD

Description

The Mojolicious module before 9.11 for Perl has a bug in format detection that can potentially be exploited for denial of service.

CWE-400Resource Exhaustion

How to fix

Remediation Available

libmojolicious-perlDebian

Fixed in:9.21+dfsg-1CVE-2021-47208

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.55%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	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 2025-05-05.