Is CVE-2021-39172 in the CISA KEV catalog?

No. CVE-2021-39172 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-39172?

CVE-2021-39172 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-39172?

CVE-2021-39172 has an EPSS score of 29.17% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-39172?

Upgrade catchet to 2.5.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-39172

HIGHEPSS 98th pctl

8.8

CVSS v3

NVD

Description

Cachet is an open source status page system. Prior to version 2.5.1, authenticated users, regardless of their privileges (User or Admin), can exploit a new line injection in the configuration edition feature (e.g. mail settings) and gain arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving `UpdateConfigCommandHandler` and preventing the use of new lines characters in new configuration values. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

CWE-93

How to fix

Remediation Available

catchetNVD

Affected:< 2.5.1Fixed in:2.5.1CVE-2021-39172derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

29.17%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Exploit1

blog.sonarsource.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-93 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-61884	High	7.5	98%	KEV + Ransom	-
CVE-2022-0666	High	7.5	44%	-	Fix
CVE-2016-3115	Medium	6.4	37%	-	Fix
CVE-2024-20337	High	8.2	30%	-	Fix
CVE-2016-4975	Medium	6.1	20%	-	Fix
CVE-2019-10678	High	7.5	17%	-	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.