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CVE-2018-6389

75
FAUCET Score

CVE-2018-6389 is a denial-of-service vulnerability affecting WordPress versions through 4.9.2. Unauthenticated attackers can exploit this by repeatedly requesting a large number of JavaScript files, leading to significant resource consumption. With a CVSS score of 7.5 (High), this easily exploitable vulnerability (AV:N/AC:L) can completely disrupt affected WordPress sites. While not on the KEV catalog, public exploit code exists (EDB-43968), and it has garnered significant community discussion and media coverage, indicating a high potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.9.2CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
72.67%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-43968 · Feb 5, 2018
This CVE's current EPSS score of 0.7267 is in the 99th percentile among its peer group of 51,506 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

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

Remediation

Remediation records are not available for this CVE.

References

baraktawily.blogspot.fr / 2018/02/how-to-dos-29-of-world-wide-websites.html
ExploitIssue TrackingThird Party Advisory
github.com / UltimateHackers/Shiva
ExploitThird Party Advisory
github.com / WazeHell/CVE-2018-6389
Third Party Advisory
thehackernews.com / 2018/02/wordpress-dos-exploit.html
ExploitThird Party Advisory
wpvulndb.com / vulnerabilities/9021
Third Party Advisory
exploit-db.com / exploits/43968
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/103060
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040347
Third Party AdvisoryVDB Entry