CVE-2023-4919: The iframe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `iframe` shortcode in ver

Q: How do I fix CVE-2023-4919?

iframe: upgrade to 4.7. Exact commands for each OS are on this page.

Q: Is CVE-2023-4919 being exploited?

CVE-2023-4919 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-2023-4919 affect?

CVE-2023-4919 affects iframe. Severity is medium (CVSS 6.4). The iframe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `iframe` shortcode in versions up to, and including, 4.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticat

Q: How urgent is CVE-2023-4919?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.4UPGRADE

CVE-2023-4919 is a medium-severity flaw (CVSS 6.4) affecting iframe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The iframe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `iframe` shortcode in versions up to, and including, 4.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permission and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This was partially patched in version 4.6 and ful

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-20
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: iframe project

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

Am I affected?

Timeline

2023-10-20 07:15 UTCPublished CVE record published
2026-06-17 06:38 UTCUpdated Record last modified

iframe project iframe UPGRADE

Affected: < 4.7

Fixed in: 4.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.7 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade iframe

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-2023-4919?

iframe: upgrade to 4.7. Exact commands for each OS are on this page.

Is CVE-2023-4919 being exploited?

CVE-2023-4919 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-2023-4919 affect?

CVE-2023-4919 affects iframe. Severity is medium (CVSS 6.4). The iframe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `iframe` shortcode in versions up to, and including, 4.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticat

How urgent is CVE-2023-4919?

Priority 40/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-52125 MEDIUM 6.5 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in webvital
CVE-2023-24394 MEDIUM 5.9 UPGRADE Auth

References

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