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Fencer Vulns
high 7.5

CVE-2018-6389 in the critical feed json

In WordPress through 4.9.2, unauthenticated attackers can cause a denial of service (resource consumption) by using the large list of regis…

published 2018-02-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18146

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
72.7%
EPSS 72.7% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB

Summary

In WordPress through 4.9.2, unauthenticated attackers can cause a denial of service (resource consumption) by using the large list of registered .js files (from wp-includes/script-loader.php) to construct a series of requests to load every file many times.

Timeline

  1. First public exploit (EDB-43968)
  2. Published

Exploit prediction

72.67% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-43968 WordPress Core - 'load-scripts.php' Denial of Service dos, 2018-02-05
  • baraktawily.blogspot.fr https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.html referenced PoC, tagged "exploit" by a source, unverified
  • thehackernews.com https://thehackernews.com/2018/02/wordpress-dos-exploit.html referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/UltimateHackers/Shiva referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.