CVE-2021-24311: The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable

Q: How do I fix CVE-2021-24311?

external media: upgrade to 1.0.34. Exact commands for each OS are on this page.

Q: Is CVE-2021-24311 being exploited?

CVE-2021-24311 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-2021-24311 affect?

CVE-2021-24311 affects external media. Severity is high (CVSS 8.8). The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable to arbitrary file uploads via any authenticated users.

Q: How urgent is CVE-2021-24311?

Priority 55/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2021-24311 is a high-severity flaw (CVSS 8.8) affecting external media. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable to arbitrary file uploads via any authenticated users.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-434
Published	2021-06-01
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: external media project

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

Am I affected?

Timeline

2021-06-01 14:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

external media project external media UPGRADE

Affected: < 1.0.34

Fixed in: 1.0.34

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy external-media || rpm -q external-media || external-media --version

2. UPGRADE to 1.0.34 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade external-media

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade external-media

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-2021-24311?

external media: upgrade to 1.0.34. Exact commands for each OS are on this page.

Is CVE-2021-24311 being exploited?

CVE-2021-24311 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-2021-24311 affect?

CVE-2021-24311 affects external media. Severity is high (CVSS 8.8). The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable to arbitrary file uploads via any authenticated users.

How urgent is CVE-2021-24311?

Priority 55/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2022-3832 MEDIUM 4.8 UPGRADE The External Media WordPress plugin before 1.0.36 does not sanitise and escape some of its settings, which cou

References

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