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CVE-2022-23514

26
FAUCET Score

CVE-2022-23514 is a denial-of-service vulnerability affecting Loofah versions prior to 2.19.1. It stems from an inefficient regular expression used in sanitizing SVG attributes, leading to excessive backtracking and high CPU consumption when processing specially crafted HTML/XML documents. This vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low complexity to achieve a complete denial of service. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.19.1CPE matchmatch criteria
cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 57th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.13 for RHEL 8Fixed in: satellite:el8/rubygem-loofah-0:2.19.1-1.el8sat
View patch
rubygemspatch availablevia ghsa
Product: loofahFixed in: 2.19.1
redhatno patchvia redhat_api
Product: Red Hat Satellite 6Fixed in: tfm-rubygem-loofah
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp-zync-container

Vendor Advisories (2)

rubygemsGHSA-486f-hjj9-9vhhhigh

Inefficient Regular Expression Complexity in Loofah

Dec 13, 2022
redhatCVE-2022-23514Moderate

rubygem-loofah: inefficient regular expression leading to denial of service

Dec 13, 2022

References

lists.debian.org / debian-lts-announce/2024/09/msg00044.html
github.com / flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh
Third Party Advisory
hackerone.com / reports/1684163
Permissions RequiredThird Party Advisory
lists.debian.org / debian-lts-announce/2023/09/msg00011.html