Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2022-23516

25
FAUCET Score

CVE-2022-23516 is a denial-of-service vulnerability affecting Loofah versions 2.2.0 through 2.19.0. It arises from recursive sanitization of CDATA sections, leading to stack exhaustion and a SystemStackError exception, consuming CPU resources. Rated 7.5 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), this network-exploitable flaw requires no user interaction and can result in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, < 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
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 40th 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: tfm-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: satellite:el8/rubygem-loofah
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp-zync-container

Vendor Advisories (2)

rubygemsGHSA-3x8r-x6xp-q4vmhigh

Uncontrolled Recursion in Loofah

Dec 13, 2022
redhatCVE-2022-23516Moderate

rubygem-loofah: Uncontrolled Recursion 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-3x8r-x6xp-q4vm
Third Party Advisory
lists.debian.org / debian-lts-announce/2023/09/msg00011.html