Is CVE-2022-23517 in the CISA KEV catalog?

No. CVE-2022-23517 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-23517?

CVE-2022-23517 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-23517?

CVE-2022-23517 has an EPSS score of 1.45% (70th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-23517?

Upgrade ruby-rails-html-sanitizer on debian 11 to 1.3.0-1+deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2022-23517

HIGHEPSS 70th pctl

7.5

CVSS v3

NVD

Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

CWE-1333

How to fix

Remediation Available

ruby-rails-html-sanitizerDebian

Fixed in:1.3.0-1+deb11u1CVE-2022-23517

Fixed in:1.4.4-1CVE-2022-23517

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

1.45%probability of exploitation in 30 days

70thpercentile

Elevated risk: more likely to be exploited than 70% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory3

Other references1

lists.debian.org

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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 2025-11-03.