CVE-2018-20973

CRITICALNVD 9.89.8—

9.8

The companion-auto-update plugin before 3.2.1 for WordPress has local file inclusion.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 73.8%
KEV: Not listed

Published

August 16, 2019

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 6, 2026

No patch confirmed yet.

generic

Companion Auto Update – WordPress plugin | WordPress.org

https://wordpress.org/plugins/companion-auto-update/#developers

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2018-20973?

CVE-2018-20973 is a critical vulnerability published on August 16, 2019. The companion-auto-update plugin before 3.2.1 for WordPress has local file inclusion.

When was CVE-2018-20973 disclosed?

CVE-2018-20973 was first published in the National Vulnerability Database on August 16, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-20973 actively exploited?

CVE-2018-20973 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20973?

CVE-2018-20973 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-20973?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20973, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-20973

Explore →

Is Your Infrastructure Affected by CVE-2018-20973?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

Frequently asked(5)

What is CVE-2018-20973?

CVE-2018-20973 is a critical vulnerability published on August 16, 2019. The companion-auto-update plugin before 3.2.1 for WordPress has local file inclusion.

When was CVE-2018-20973 disclosed?

Is CVE-2018-20973 actively exploited?

What is the CVSS score of CVE-2018-20973?

CVE-2018-20973 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-20973?

CVE-2018-20973

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Companion Auto Update – WordPress plugin | WordPress.org

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20973?

CVE-2018-20973

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Companion Auto Update – WordPress plugin | WordPress.org

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20973?

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