Inefficient Regular Expression Complexity in Loofah

CAO 7.5CVE-2022-23514 · GHSA-486f-hjj9-9vhh · Công bố 14/12/2022 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2022-23514 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng loofah, loofah (loofah project).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 1.8%, cao hơn 78.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 2.19.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
loofah RubyGems	`< 2.19.1`	`2.19.1`
loofah loofah_project	`< 2.19.1`	`2.19.1`

Mô tả

Summary

Loofah < 2.19.1 contains 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.

Mitigation

Upgrade to Loofah >= 2.19.1.

Severity

The Loofah maintainers have evaluated this as High Severity 7.5 (CVSS3.1).

References

Credit

This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).

Mô tả của NVD

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah < 2.19.1 contains 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 is patched in version 2.19.1.