CVE-2024-45613: CKEditor 5 is a JavaScript rich-text editor

Routine

MEDIUM 6.1UPGRADE

CVE-2024-45613 is a medium-severity flaw (CVSS 6.1) affecting ckeditor5. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CKEditor 5 is a JavaScript rich-text editor. Starting in version 40.0.0 and prior to version 43.1.1, a Cross-Site Scripting (XSS) vulnerability is present in the CKEditor 5 clipboard package. This vulnerability could be triggered by a specific user action, leading to unauthorized JavaScript code execution, if the attacker managed to insert a malicious content into the editor, which might happen with a very specific editor configuration. This vuln

Why this priority

No elevated risk signals yet

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	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-09-25
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: ckeditor

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

Am I affected?

Timeline

2024-09-25 14:15 UTCPublished CVE record published
2026-06-17 07:54 UTCUpdated Record last modified

ckeditor ckeditor5 UPGRADE

Affected: >= 40.0.0 and < 43.1.1

Fixed in: 43.1.1

Safe to downgrade to: a release before 40.0.0

1. Check installed version

apt-cache policy ckeditor5 || rpm -q ckeditor5 || ckeditor5 --version

2. UPGRADE to 43.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ckeditor5

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ckeditor5

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 40.0.0 (Debian / Ubuntu)

apt-cache madison ckeditor5 sudo apt install ckeditor5=<VERSION_BEFORE_40.0.0> sudo apt-mark hold ckeditor5

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

dnf --showduplicates list ckeditor5 sudo dnf downgrade ckeditor5-<VERSION_BEFORE_40.0.0> sudo dnf versionlock add ckeditor5

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.

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-2024-45613?

ckeditor5: upgrade to 43.1.1. Exact commands for each OS are on this page.

Is CVE-2024-45613 being exploited?

CVE-2024-45613 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-2024-45613 affect?

CVE-2024-45613 affects ckeditor5. Severity is medium (CVSS 6.1). CKEditor 5 is a JavaScript rich-text editor. Starting in version 40.0.0 and prior to version 43.1.1, a Cross-Site Scripting (XSS) vulnerability is present in the CKEditor 5 clipboard package. This vulnerability could be triggered by a speci

How urgent is CVE-2024-45613?

Priority 32/100. No elevated risk signals yet.

Related CVEs

CVE-2026-28343 MEDIUM 6.4 UPGRADE CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture
CVE-2025-61261 MEDIUM 5.4 DOWNGRADE DOWNGRADE A reflected cross-site scripting (XSS) vulnerability in CKeditor v46.1.0 & Angular v18.0.0 allows attackers to

References

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