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CVE-2019-17673

26
FAUCET Score

CVE-2019-17673 describes a cache poisoning vulnerability affecting WordPress versions prior to 5.2.4, specifically impacting the cache of JSON GET requests due to the absence of a "Vary: Origin" header. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low complexity and without user interaction, potentially leading to high integrity impact, though confidentiality and availability are not directly affected. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.2.4CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.04%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0304 is in the 75th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blog.wpscan.org / wordpress/security/release/2019/10/15/wordpress-524-security-release-breakdown.html
Third Party Advisory
core.trac.wordpress.org / changeset/46478
PatchVendor Advisory
github.com / WordPress/WordPress/commit/b224c251adfa16a5f84074a3c0886270c9df38de
PatchThird Party Advisory
seclists.org / bugtraq/2020/Jan/8
Mailing ListThird Party Advisory
wordpress.org / news/2019/10/wordpress-5-2-4-security-release
Release NotesVendor Advisory
wpvulndb.com / vulnerabilities/9911
Third Party Advisory
debian.org / security/2020/dsa-4599
Third Party Advisory
debian.org / security/2020/dsa-4677
Third Party Advisory