Is CVE-2022-40023 in the CISA KEV catalog?

No. CVE-2022-40023 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-40023?

CVE-2022-40023 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-40023?

CVE-2022-40023 has an EPSS score of 1.72% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-40023?

Upgrade mako on debian 11 to 1.1.3+ds1-2+deb11u1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2022-40023

HIGHEPSS 75th pctl

7.5

CVSS v3

NVD

Description

Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.

CWE-1333

How to fix

Remediation Available

makoDebian

Fixed in:1.1.3+ds1-2+deb11u1CVE-2022-40023

Fixed in:1.2.2+ds1-1CVE-2022-40023

python-makoRocky

Fixed in:0:1.0.6-14.el8RHSA-2023:2893

Fixed in:0:1.1.4-6.el9RHSA-2023:2258

python-makoRed Hat / RHEL

Fixed in:0:1.0.6-14.el8RHSA-2023:2893

Fixed in:0:1.1.4-6.el9RHSA-2023:2258

python3-makoRocky

Fixed in:0:1.0.6-14.el8RHSA-2023:2893

Fixed in:0:1.1.4-6.el9RHSA-2023:2258

python3-makoRed Hat / RHEL

Fixed in:0:1.0.6-14.el8RHSA-2023:2893

Fixed in:0:1.1.4-6.el9RHSA-2023:2258

makoUbuntu

Fixed in:1.0.3+ds1-1ubuntu1+esm1USN-5625-1

Fixed in:1.0.7+ds1-1ubuntu0.2USN-5625-1

Fixed in:1.1.0+ds1-1ubuntu2.1USN-5625-1

Fixed in:1.1.3+ds1-2ubuntu0.1USN-5625-1

Fixed in:1.1.3+ds1-3ubuntu2.1USN-5625-2

python-makoUbuntu

Fixed in:1.0.3+ds1-1ubuntu1+esm1USN-5625-1

Fixed in:1.0.7+ds1-1ubuntu0.2USN-5625-1

Fixed in:1.1.0+ds1-1ubuntu2.1USN-5625-1

python3-makoUbuntu

Fixed in:1.0.3+ds1-1ubuntu1+esm1USN-5625-1

Fixed in:1.0.7+ds1-1ubuntu0.2USN-5625-1

Fixed in:1.1.0+ds1-1ubuntu2.1USN-5625-1

Fixed in:1.1.3+ds1-2ubuntu0.1USN-5625-1

Fixed in:1.1.3+ds1-3ubuntu2.1USN-5625-2

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 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

1.72%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch2

Exploit2

Third-Party Advisory2

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-1333 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-3364	High	7.5	45%	-	Fix
CVE-2024-8124	High	7.5	40%	-	Fix
CVE-2024-25126	Medium	5.3	35%	-	Fix
CVE-2024-2651	Medium	6.5	33%	-	Fix
CVE-2021-32837	High	7.5	29%	-	Fix
CVE-2024-2829	High	7.5	26%	-	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 2025-12-03.