CVE-2019-11869: The Yuzo Related Posts plugin 5.12.94 for WordPress has XSS because it mistakenly expects that is_admin() veri

Q: How do I fix CVE-2019-11869?

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

Q: Is CVE-2019-11869 being exploited?

CVE-2019-11869 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-2019-11869 affect?

CVE-2019-11869 affects yuzo. Severity is medium (CVSS 6.1). The Yuzo Related Posts plugin 5.12.94 for WordPress has XSS because it mistakenly expects that is_admin() verifies that the request comes from an admin user (it actually only verifies that the request is for an admin page). An unauthenticat

Q: How urgent is CVE-2019-11869?

Priority 49/100. EPSS top 8%: very likely to be exploited; Public exploit reference

This month

MEDIUM 6.1DOWNGRADE

CVE-2019-11869 is a medium-severity flaw (CVSS 6.1) affecting yuzo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Yuzo Related Posts plugin 5.12.94 for WordPress has XSS because it mistakenly expects that is_admin() verifies that the request comes from an admin user (it actually only verifies that the request is for an admin page). An unauthenticated attacker can inject a payload into the plugin settings, such as the yuzo_related_post_css_and_style setting.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	5.2% (top 8%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-05-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yuzopro

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

Am I affected?

Timeline

2019-05-09 23:29 UTCPublished CVE record published
2026-06-17 02:13 UTCUpdated Record last modified

yuzopro yuzo DOWNGRADE

Affected: 5.12.94

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.12.94

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.12.94 (Debian / Ubuntu)

apt-cache madison yuzo sudo apt install yuzo=<VERSION_BEFORE_5.12.94> sudo apt-mark hold yuzo

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

dnf --showduplicates list yuzo sudo dnf downgrade yuzo-<VERSION_BEFORE_5.12.94> sudo dnf versionlock add yuzo

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress Yuzo <5.12.94 - Cross-Site Scripting

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-2019-11869?

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

Is CVE-2019-11869 being exploited?

CVE-2019-11869 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-2019-11869 affect?

CVE-2019-11869 affects yuzo. Severity is medium (CVSS 6.1). The Yuzo Related Posts plugin 5.12.94 for WordPress has XSS because it mistakenly expects that is_admin() verifies that the request comes from an admin user (it actually only verifies that the request is for an admin page). An unauthenticat

How urgent is CVE-2019-11869?

Priority 49/100. EPSS top 8%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities

References

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