CVE-2018-5213: The Simple Download Monitor plugin before 3.5.4 for WordPress has XSS via the sdm_upload (aka Downloadable Fil

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MEDIUM 5.4DOWNGRADE

CVE-2018-5213 is a medium-severity flaw (CVSS 5.4) affecting simple download monitor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Simple Download Monitor plugin before 3.5.4 for WordPress has XSS via the sdm_upload (aka Downloadable File) parameter in an edit action to wp-admin/post.php.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-01-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simple download monitor project

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

Am I affected?

Timeline

2018-01-04 18:29 UTCPublished CVE record published
2026-06-17 01:59 UTCUpdated Record last modified

simple download monitor project simple download monitor DOWNGRADE

Affected: 3.5.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5.4

1. Check installed version

apt-cache policy simple-download-monitor || rpm -q simple-download-monitor || simple-download-monitor --version

2. No fixed release: DOWNGRADE to a release before 3.5.4 (Debian / Ubuntu)

apt-cache madison simple-download-monitor sudo apt install simple-download-monitor=<VERSION_BEFORE_3.5.4> sudo apt-mark hold simple-download-monitor

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list simple-download-monitor sudo dnf downgrade simple-download-monitor-<VERSION_BEFORE_3.5.4> sudo dnf versionlock add simple-download-monitor

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-2018-5213?

simple download monitor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-5213 being exploited?

CVE-2018-5213 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-2018-5213 affect?

CVE-2018-5213 affects simple download monitor. Severity is medium (CVSS 5.4). The Simple Download Monitor plugin before 3.5.4 for WordPress has XSS via the sdm_upload (aka Downloadable File) parameter in an edit action to wp-admin/post.php.

How urgent is CVE-2018-5213?

Priority 40/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

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References

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