How severe is CVE-2022-23517?

CVE-2022-23517 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-23517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23517?

CVE-2022-23517 primarily affects Rubyonrails Rails Html Sanitizers. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23517?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-23517 published?

CVE-2022-23517 was published on 2022-12-14 and last updated on 2026-06-17.

CVE-2022-23517

CVE-2022-23517 is a high-severity vulnerability in Rubyonrails Rails Html Sanitizers with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1333
Affected product: Rubyonrails Rails Html Sanitizers
Published: 2022-12-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-23517?: 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.
How severe is CVE-2022-23517?: CVE-2022-23517 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-23517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23517?: CVE-2022-23517 primarily affects Rubyonrails Rails Html Sanitizers. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-23517 published?: CVE-2022-23517 was published on 2022-12-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:rubyonrails:rails_html_sanitizers:*:*:*:*:*:rails:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Rubyonrails Rails Html Sanitizers

CVE-2022-23519 — High (CVSS 7.2): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a…
CVE-2024-53988 — Medium (CVSS 6.1): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS…
CVE-2024-53987 — Medium (CVSS 6.1): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS…
CVE-2024-53986 — Medium (CVSS 6.1): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS…
CVE-2024-53985 — Medium (CVSS 6.1): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS…
CVE-2024-53989 — Medium (CVSS 6.1): rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS…

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