CVE-2023-42371: Cross Site Scripting vulnerability in Summernote Rich Text Editor v.0.8.18 and before allows a remote attacker

Q: How do I fix CVE-2023-42371?

rich text editor: upgrade to newer than 0.8.18. Exact commands for each OS are on this page.

Q: Is CVE-2023-42371 being exploited?

CVE-2023-42371 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-2023-42371 affect?

CVE-2023-42371 affects rich text editor. Severity is medium (CVSS 5.4). Cross Site Scripting vulnerability in Summernote Rich Text Editor v.0.8.18 and before allows a remote attacker to execute arbitrary code via a crafted script to the insert link function in the editor component.

Q: How urgent is CVE-2023-42371?

Priority 36/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2023-42371 is a medium-severity flaw (CVSS 5.4) affecting rich text editor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Summernote Rich Text Editor v.0.8.18 and before allows a remote attacker to execute arbitrary code via a crafted script to the insert link function in the editor component.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-09-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: summernote

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

Am I affected?

Timeline

2023-09-18 15:15 UTCPublished CVE record published
2026-06-17 06:23 UTCUpdated Record last modified

summernote rich text editor UPGRADE

Affected: <= 0.8.18

Fixed in: newer than 0.8.18

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rich-text-editor || rpm -q rich-text-editor || rich-text-editor --version

2. UPGRADE to newer than 0.8.18 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rich-text-editor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rich-text-editor

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-2023-42371?

rich text editor: upgrade to newer than 0.8.18. Exact commands for each OS are on this page.

Is CVE-2023-42371 being exploited?

CVE-2023-42371 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-2023-42371 affect?

CVE-2023-42371 affects rich text editor. Severity is medium (CVSS 5.4). Cross Site Scripting vulnerability in Summernote Rich Text Editor v.0.8.18 and before allows a remote attacker to execute arbitrary code via a crafted script to the insert link function in the editor component.

How urgent is CVE-2023-42371?

Priority 36/100. Public exploit reference

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References

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