HIGH
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
Published Feb 6, 2018
7.5
HIGHCVSS 3.0
EPSS 72.67%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
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
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
72.67% 0.72671
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.72671
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (59 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 72.67% (0.72671) | 99.43th | v5 (v2026.06.15) |
| Sep 22, 2026 | 72.67% (0.72671) | 99.42th | v5 (v2026.06.15) |
| Sep 21, 2026 | 82.60% (0.82598) | 99.66th | v5 (v2026.06.15) |
| Sep 6, 2026 | 72.67% (0.72671) | 99.41th | v5 (v2026.06.15) |
| Sep 5, 2026 | 82.60% (0.82598) | 99.65th | v5 (v2026.06.15) |
| Aug 30, 2026 | 72.67% (0.72671) | 99.40th | v5 (v2026.06.15) |
| Aug 28, 2026 | 82.60% (0.82598) | 99.65th | v5 (v2026.06.15) |
| Aug 24, 2026 | 72.67% (0.72671) | 99.40th | v5 (v2026.06.15) |
| Aug 23, 2026 | 82.60% (0.82598) | 99.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 73.10% (0.73098) | 99.38th | v5 (v2026.06.15) |
| Mar 4, 2026 | 87.48% (0.87475) | 99.45th | v4 (v2025.03.14) |
| Mar 1, 2026 | 85.37% (0.85373) | 99.35th | v4 (v2025.03.14) |
| Feb 4, 2026 | 87.48% (0.87475) | 99.44th | v4 (v2025.03.14) |
| Feb 1, 2026 | 85.37% (0.85373) | 99.34th | v4 (v2025.03.14) |
| Jan 28, 2026 | 87.48% (0.87475) | 99.44th | v4 (v2025.03.14) |
| Jan 8, 2026 | 88.56% (0.88556) | 99.48th | v4 (v2025.03.14) |
| Jan 4, 2026 | 87.48% (0.87475) | 99.43th | v4 (v2025.03.14) |
| Jan 1, 2026 | 85.37% (0.85373) | 99.34th | v4 (v2025.03.14) |
| Dec 28, 2025 | 87.61% (0.87610) | 99.43th | v4 (v2025.03.14) |
| Dec 27, 2025 | 86.01% (0.86014) | 99.36th | v4 (v2025.03.14) |
| Dec 4, 2025 | 87.93% (0.87933) | 99.44th | v4 (v2025.03.14) |
| Dec 1, 2025 | 86.13% (0.86129) | 99.37th | v4 (v2025.03.14) |
| Nov 21, 2025 | 88.06% (0.88059) | 99.44th | v4 (v2025.03.14) |
| Nov 18, 2025 | 80.70% (0.80704) | 99.21th | v4 (v2025.03.14) |
| Nov 4, 2025 | 87.93% (0.87933) | 99.44th | v4 (v2025.03.14) |
| Nov 1, 2025 | 85.97% (0.85966) | 99.36th | v4 (v2025.03.14) |
| Oct 28, 2025 | 87.93% (0.87933) | 99.44th | v4 (v2025.03.14) |
| Oct 27, 2025 | 86.41% (0.86411) | 99.36th | v4 (v2025.03.14) |
| Oct 4, 2025 | 87.93% (0.87933) | 99.44th | v4 (v2025.03.14) |
| Sep 27, 2025 | 86.41% (0.86411) | 99.37th | v4 (v2025.03.14) |
| Jul 30, 2025 | 87.65% (0.87654) | 99.43th | v4 (v2025.03.14) |
| Mar 30, 2025 | 88.85% (0.88849) | 99.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 89.90% (0.89903) | 99.50th | v4 (v2025.03.14) |
| Mar 28, 2025 | 88.85% (0.88849) | 99.49th | v4 (v2025.03.14) |
| Mar 26, 2025 | 89.90% (0.89903) | 99.56th | v4 (v2025.03.14) |
| Mar 24, 2025 | 88.85% (0.88849) | 99.52th | v4 (v2025.03.14) |
| Mar 23, 2025 | 89.90% (0.89903) | 99.56th | v4 (v2025.03.14) |
| Mar 20, 2025 | 88.74% (0.88742) | 99.51th | v4 (v2025.03.14) |
| Mar 19, 2025 | 89.82% (0.89816) | 99.56th | v4 (v2025.03.14) |
| Mar 17, 2025 | 88.74% (0.88742) | 99.49th | v4 (v2025.03.14) |
| Dec 17, 2024 | 15.65% (0.15650) | 95.88th | v3 (v2023.03.01) |
| Sep 9, 2024 | 28.95% (0.28954) | 96.96th | v3 (v2023.03.01) |
| May 12, 2024 | 36.04% (0.36041) | 97.13th | v3 (v2023.03.01) |
| Feb 22, 2024 | 37.06% (0.37061) | 97.06th | v3 (v2023.03.01) |
| Jan 17, 2024 | 43.33% (0.43327) | 97.02th | v3 (v2023.03.01) |
| Dec 17, 2023 | 40.83% (0.40831) | 96.94th | v3 (v2023.03.01) |
| Nov 22, 2023 | 37.96% (0.37964) | 96.85th | v3 (v2023.03.01) |
| Sep 26, 2023 | 35.50% (0.35505) | 96.61th | v3 (v2023.03.01) |
| Jul 8, 2023 | 39.85% (0.39847) | 96.74th | v3 (v2023.03.01) |
| Jun 30, 2023 | 38.46% (0.38458) | 96.70th | v3 (v2023.03.01) |
| May 18, 2023 | 38.99% (0.38994) | 96.67th | v3 (v2023.03.01) |
| Mar 26, 2023 | 45.42% (0.45417) | 96.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 55.95% (0.55953) | 97.07th | v3 (v2023.03.01) |
| Mar 6, 2023 | 68.58% (0.68582) | 99.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 68.58% (0.68582) | 98.94th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.61% (0.09608) | 87.22th | v1 |
| Jan 6, 2022 | 9.61% (0.09608) | 87.07th | v1 |
| Sep 1, 2021 | 9.61% (0.09608) | 94.88th | v1 |
| Apr 14, 2021 | 9.61% (0.09608) | 0.00th | v1 |
Weaknesses (1)
References (8)
- http://www.securityfocus.com/bid/103060 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040347 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.html x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://github.com/UltimateHackers/Shiva x_refsource_MISCExploitThird Party Advisory
- https://github.com/WazeHell/CVE-2018-6389 x_refsource_MISCThird Party Advisory
- https://thehackernews.com/2018/02/wordpress-dos-exploit.html x_refsource_MISCExploitThird Party Advisory
- https://wpvulndb.com/vulnerabilities/9021 x_refsource_MISCThird Party Advisory
- https://www.exploit-db.com/exploits/43968/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103060 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1040347 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.html | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://github.com/UltimateHackers/Shiva | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/WazeHell/CVE-2018-6389 | x_refsource_MISCThird Party Advisory | |
| https://thehackernews.com/2018/02/wordpress-dos-exploit.html | x_refsource_MISCExploitThird Party Advisory | |
| https://wpvulndb.com/vulnerabilities/9021 | x_refsource_MISCThird Party Advisory | |
| https://www.exploit-db.com/exploits/43968/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 6, 2018
Updated Aug 5, 2024
Reserved Jan 29, 2018
Link CVE-2018-6389
CISA Vulnrichment
Updated n/a