CVE-2022-23515: Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top o

Q: How urgent is CVE-2022-23515?

Priority 41/100. On your watchlist

This month

MEDIUM 6.1WATCHLISTUPGRADEMITIGATE

CVE-2022-23515 is a medium-severity flaw (CVSS 6.1) affecting loofah, debian linux. 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 >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml media type in data URIs. This issue is patched in version 2.19.1.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-12-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: debian · 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: >= 2.1.0 and < 2.19.1

Fixed in: 2.19.1

Safe to downgrade to: a release before 2.1.0

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.

3. If no update is available yet, DOWNGRADE to a release before 2.1.0 (Debian / Ubuntu)

apt-cache madison loofah sudo apt install loofah=<VERSION_BEFORE_2.1.0> sudo apt-mark hold loofah

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list loofah sudo dnf downgrade loofah-<VERSION_BEFORE_2.1.0> sudo dnf versionlock add loofah

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2022-23515?

loofah: upgrade to 2.19.1; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-23515 being exploited?

CVE-2022-23515 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-2022-23515 affect?

CVE-2022-23515 affects loofah, debian linux. Severity is medium (CVSS 6.1). Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml media type in data URIs. This is

How urgent is CVE-2022-23515?

Priority 41/100. On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

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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-2022-23514 HIGH 7.5 UPGRADE Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top o

References

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