CVE-2023-34245: @udecode/plate-link is the link handler for the udecode/plate rich-text editor plugin system for Slate & React

Q: How do I fix CVE-2023-34245?

plate: upgrade to 20.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-34245 being exploited?

CVE-2023-34245 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-2023-34245 affect?

CVE-2023-34245 affects plate. Severity is high (CVSS 8.1). @udecode/plate-link is the link handler for the udecode/plate rich-text editor plugin system for Slate & React. Affected versions of the link plugin and link UI component do not sanitize URLs to prevent use of the `javascript:` scheme. As a

Routine

HIGH 8.1UPGRADE

CVE-2023-34245 is a high-severity flaw (CVSS 8.1) affecting plate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

@udecode/plate-link is the link handler for the udecode/plate rich-text editor plugin system for Slate & React. Affected versions of the link plugin and link UI component do not sanitize URLs to prevent use of the `javascript:` scheme. As a result, links with JavaScript URLs can be inserted into the Plate editor through various means, including opening or pasting malicious content. `@udecode/plate-link` 20.0.0 resolves this issue by introducing a

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-06-09
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2023-06-09 18:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

udecode plate UPGRADE

Affected: < 20.0.0

Fixed in: 20.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 20.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade plate

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-2023-34245?

plate: upgrade to 20.0.0. Exact commands for each OS are on this page.

Is CVE-2023-34245 being exploited?

CVE-2023-34245 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-2023-34245 affect?

CVE-2023-34245 affects plate. Severity is high (CVSS 8.1). @udecode/plate-link is the link handler for the udecode/plate rich-text editor plugin system for Slate & React. Affected versions of the link plugin and link UI component do not sanitize URLs to prevent use of the `javascript:` scheme. As a

How urgent is CVE-2023-34245?

Priority 38/100. High severity

Software pages

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References

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