CVE-2018-6389
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 72.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 72.67% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · first 5 February 2018
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- wordpress/wordpress
- Source
- cve@mitre.org
EPSS moved from 82.6% on 21 September 2026 to 72.7% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/103060Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040347Third Party Advisory, VDB Entry
- https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.htmlExploit, Issue Tracking, Third Party Advisory
- https://github.com/UltimateHackers/ShivaExploit, Third Party Advisory
- https://github.com/WazeHell/CVE-2018-6389Third Party Advisory
- https://thehackernews.com/2018/02/wordpress-dos-exploit.htmlExploit, Third Party Advisory
- https://wpvulndb.com/vulnerabilities/9021Third Party Advisory
- https://www.exploit-db.com/exploits/43968/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/103060Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040347Third Party Advisory, VDB Entry
- https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.htmlExploit, Issue Tracking, Third Party Advisory
- https://github.com/UltimateHackers/ShivaExploit, Third Party Advisory
- https://github.com/WazeHell/CVE-2018-6389Third Party Advisory
- https://thehackernews.com/2018/02/wordpress-dos-exploit.htmlExploit, Third Party Advisory
- https://wpvulndb.com/vulnerabilities/9021Third Party Advisory
- https://www.exploit-db.com/exploits/43968/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.