CVE-2022-23514: Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top o

Q: How do I fix CVE-2022-23514?

loofah: upgrade to 2.19.1. Exact commands for each OS are on this page.

Q: Is CVE-2022-23514 being exploited?

CVE-2022-23514 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-23514 affect?

CVE-2022-23514 affects loofah. Severity is high (CVSS 7.5). 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 attempti

Q: How urgent is CVE-2022-23514?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2022-23514 is a high-severity flaw (CVSS 7.5) affecting loofah. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-1333
Published	2022-12-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: loofah project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-12-14 14:15 UTCPublished CVE record published
2026-06-17 04:30 UTCUpdated Record last modified

loofah project loofah UPGRADE

Affected: < 2.19.1

Fixed in: 2.19.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy loofah || rpm -q loofah || loofah --version

2. UPGRADE to 2.19.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade loofah

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade loofah

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-23514?

loofah: upgrade to 2.19.1. Exact commands for each OS are on this page.

Is CVE-2022-23514 being exploited?

CVE-2022-23514 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-23514 affect?

CVE-2022-23514 affects loofah. Severity is high (CVSS 7.5). 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 attempti

How urgent is CVE-2022-23514?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

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CVE-2022-23516 HIGH 7.5 UPGRADE Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top o
CVE-2022-23515 MEDIUM 6.1 UPGRADE MITIGATE Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top o

References

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