CVE-2018-5311: The Easy Custom Auto Excerpt plugin 2.4.6 for WordPress has XSS via the tonjoo_ecae_options[custom_css] parame

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-5311 is a medium-severity flaw (CVSS 5.4) affecting easy custom auto excerpt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Easy Custom Auto Excerpt plugin 2.4.6 for WordPress has XSS via the tonjoo_ecae_options[custom_css] parameter to the wp-admin/admin.php?page=tonjoo_excerpt URI.

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	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-01-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tonjoostudio

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

Am I affected?

Timeline

2018-01-09 05:29 UTCPublished CVE record published
2026-06-17 02:00 UTCUpdated Record last modified

tonjoostudio easy custom auto excerpt DOWNGRADE

Affected: 2.4.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.6

1. Check installed version

apt-cache policy easy-custom-auto-excerpt || rpm -q easy-custom-auto-excerpt || easy-custom-auto-excerpt --version

2. No fixed release: DOWNGRADE to a release before 2.4.6 (Debian / Ubuntu)

apt-cache madison easy-custom-auto-excerpt sudo apt install easy-custom-auto-excerpt=<VERSION_BEFORE_2.4.6> sudo apt-mark hold easy-custom-auto-excerpt

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

dnf --showduplicates list easy-custom-auto-excerpt sudo dnf downgrade easy-custom-auto-excerpt-<VERSION_BEFORE_2.4.6> sudo dnf versionlock add easy-custom-auto-excerpt

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-2018-5311?

easy custom auto excerpt: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-5311 being exploited?

CVE-2018-5311 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-2018-5311 affect?

CVE-2018-5311 affects easy custom auto excerpt. Severity is medium (CVSS 5.4). The Easy Custom Auto Excerpt plugin 2.4.6 for WordPress has XSS via the tonjoo_ecae_options[custom_css] parameter to the wp-admin/admin.php?page=tonjoo_excerpt URI.

How urgent is CVE-2018-5311?

Priority 36/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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