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

Description

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

Scores

EPSS (exploitation in 30 days)

3.5% · top 11% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (8)

• https://wpvulndb.com/vulnerabilities/9911 (opens in a new tab)x_refsource_MISCx_transferred
• https://blog.wpscan.org/wordpress/security/release/2019/10/15/wordpress-524-security-release-breakdown.html (opens in a new tab)x_refsource_MISCx_transferred
• https://wordpress.org/news/2019/10/wordpress-5-2-4-security-release/ (opens in a new tab)x_refsource_MISCx_transferred
• https://core.trac.wordpress.org/changeset/46478 (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/WordPress/WordPress/commit/b224c251adfa16a5f84074a3c0886270c9df38de (opens in a new tab)x_refsource_MISCx_transferred
• 20200108 [SECURITY] [DSA 4599-1] wordpress security update (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• DSA-4599 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• DSA-4677 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-17673](https://trackcve.app/badge/CVE-2019-17673.svg)](https://trackcve.app/cve/CVE-2019-17673)

Record last updated 5 Aug 2024, 01:47 UTC.