CVE-2019-17673

HIGHNVD 7.57.5—

7.5

WordPress before 5.2.4 is vulnerable to poisoning of the cache of JSON GET requests because certain requests lack a Vary: Origin header.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 88.1%
KEV: Not listed

Published

October 17, 2019

Last Modified

November 21, 2024

References (16)

cve@mitrehttps://blog.wpscan.org/wordpress/security/release/2019/10/15/wordpress-524-security-release-breakdown.html
cve@mitrehttps://core.trac.wordpress.org/changeset/46478
cve@mitrehttps://github.com/WordPress/WordPress/commit/b224c251adfa16a5f84074a3c0886270c9df38de
cve@mitrehttps://seclists.org/bugtraq/2020/Jan/8
cve@mitrehttps://wordpress.org/news/2019/10/wordpress-5-2-4-security-release/
cve@mitrehttps://wpvulndb.com/vulnerabilities/9911
cve@mitrehttps://www.debian.org/security/2020/dsa-4599
cve@mitrehttps://www.debian.org/security/2020/dsa-4677
af854a3a-2127-422b-91ae-364da2661108https://blog.wpscan.org/wordpress/security/release/2019/10/15/wordpress-524-security-release-breakdown.html
af854a3a-2127-422b-91ae-364da2661108https://core.trac.wordpress.org/changeset/46478
af854a3a-2127-422b-91ae-364da2661108https://github.com/WordPress/WordPress/commit/b224c251adfa16a5f84074a3c0886270c9df38de
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/bugtraq/2020/Jan/8
af854a3a-2127-422b-91ae-364da2661108https://wordpress.org/news/2019/10/wordpress-5-2-4-security-release/
af854a3a-2127-422b-91ae-364da2661108https://wpvulndb.com/vulnerabilities/9911
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4599

Weakness Classification(1)

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

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 6× in last 7d / 31× 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.

2026-06-13 22:58 UTCEPSS rescore
2026-06-12 23:09 UTCEPSS rescore
2026-06-11 13:58 UTCEPSS rescore
2026-06-10 22:16 UTCEPSS rescore
2026-06-10 13:19 UTCEPSS rescore
2026-06-08 14:15 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
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-05-31 22:29 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 13:42 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 12:49 UTCEG score recompute
2026-05-27 12:49 UTCGHSA enrichment

Show 6 more

2026-05-26 13:42 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-25 05:37 UTCOSV refresh

Frequently asked(5)

What is CVE-2019-17673?

CVE-2019-17673 is a high vulnerability published on October 17, 2019. WordPress before 5.2.4 is vulnerable to poisoning of the cache of JSON GET requests because certain requests lack a Vary: Origin header.

When was CVE-2019-17673 disclosed?

CVE-2019-17673 was first published in the National Vulnerability Database on October 17, 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-2019-17673 actively exploited?

CVE-2019-17673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-17673?

CVE-2019-17673 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2019-17673?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-17673, 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

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CVE-2019-17673

📅 Published

🔄 Last Modified

🔗 References (16)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-17673?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (16)

Frequently asked(5)

Related CVEs(same CWE)