Is CVE-2020-26137 in the CISA KEV catalog?

No. CVE-2020-26137 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-26137?

CVE-2020-26137 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-26137?

CVE-2020-26137 has an EPSS score of 2.27% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-26137?

Upgrade python-urllib3 on debian 11 to 1.25.9-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-26137

MEDIUMEPSS 81th pctl

6.5

CVSS v3

NVD

Description

urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.

CWE-74Injection

How to fix

Remediation Available

python-urllib3Debian

Fixed in:1.25.9-1CVE-2020-26137

python-urllib3Ubuntu

Fixed in:1.13.1-2ubuntu0.16.04.4USN-4570-1

Fixed in:1.22-1ubuntu0.18.04.2USN-4570-1

Fixed in:1.25.8-2ubuntu0.1USN-4570-1

python3-urllib3Ubuntu

Fixed in:1.13.1-2ubuntu0.16.04.4USN-4570-1

Fixed in:1.22-1ubuntu0.18.04.2USN-4570-1

Fixed in:1.25.8-2ubuntu0.1USN-4570-1

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

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

2.27%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch4

Vendor Advisory1

bugs.python.org

Third-Party Advisory2

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	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.