Public proof of conceptFix available

CVE-2022-23514

Q: Is CVE-2022-23514 actively exploited?

A proof-of-concept exploit exists for CVE-2022-23514, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2022-23514?

CVE-2022-23514 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

A public proof of concept exists; no exploitation attested.

Published2022-12-14
Fixed in2.19.1
WeaknessCWE-1333

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2022-12-1414:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-23514?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-23514?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Loofah project loofah

Branch	Affected	Fixed in	Source
2.19	< 2.19.1	2.19.1	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Loofah project loofah to 2.19.1

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionpoc2025-04-21
OpenCVESSVC decisionpoc—
CNACVSS 3.17.5read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-1333read 2026-10-23
FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2022-12-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-23514?

Is CVE-2022-23514 actively exploited?

A proof-of-concept exploit exists for CVE-2022-23514, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2022-23514?

CVE-2022-23514 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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