Is CVE-2020-26298 in the CISA KEV catalog?

No. CVE-2020-26298 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-26298?

CVE-2020-26298 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2020-26298?

CVE-2020-26298 has an EPSS score of 1.57% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-26298?

Upgrade ruby-redcarpet on debian 11 to 3.5.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-26298

MEDIUMEPSS 72th pctl

6.8

CVSS v3

NVD

Description

Redcarpet is a Ruby library for Markdown processing. In Redcarpet before version 3.5.1, there is an injection vulnerability which can enable a cross-site scripting attack. In affected versions no HTML escaping was being performed when processing quotes. This applies even when the `:escape_html` option was being used. This is fixed in version 3.5.1 by the referenced commit.

CWE-74Injection CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

ruby-redcarpetDebian

Fixed in:3.5.1-1CVE-2020-26298

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 InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.57%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory5

Other references3

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.