MEDIUM
In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data
Published Dec 14, 2018
5.4
MEDIUMCVSS 3.0
EPSS 2.89%
Description
In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 8.0
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.4 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
3.5 LOW NVD
AV:N/AC:M/Au:S/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.89% 0.02893
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02893
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.89% (0.02893) | 86.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.44% (0.03443) | 87.41th | v5 (v2026.06.15) |
| Dec 28, 2025 | 4.43% (0.04428) | 88.66th | v4 (v2025.03.14) |
| Dec 27, 2025 | 3.20% (0.03201) | 86.65th | v4 (v2025.03.14) |
| Nov 21, 2025 | 4.43% (0.04428) | 88.54th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.74% (0.00738) | 70.62th | v4 (v2025.03.14) |
| Oct 28, 2025 | 4.43% (0.04428) | 88.51th | v4 (v2025.03.14) |
| Oct 27, 2025 | 3.20% (0.03201) | 86.50th | v4 (v2025.03.14) |
| Oct 4, 2025 | 4.43% (0.04428) | 88.56th | v4 (v2025.03.14) |
| Sep 4, 2025 | 3.26% (0.03261) | 86.67th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.11% (0.02111) | 83.49th | v4 (v2025.03.14) |
| Aug 4, 2025 | 3.26% (0.03261) | 86.67th | v4 (v2025.03.14) |
| Aug 1, 2025 | 2.11% (0.02111) | 83.48th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.03% (0.04032) | 87.42th | v4 (v2025.03.14) |
| Mar 29, 2025 | 20.52% (0.20522) | 92.77th | v4 (v2025.03.14) |
| Mar 24, 2025 | 4.03% (0.04032) | 87.39th | v4 (v2025.03.14) |
| Mar 23, 2025 | 20.52% (0.20522) | 94.84th | v4 (v2025.03.14) |
| Mar 19, 2025 | 4.03% (0.04032) | 87.11th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.34% (0.05345) | 89.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00098) | 42.44th | v3 (v2023.03.01) |
| Dec 8, 2023 | 0.10% (0.00102) | 41.20th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00090) | 36.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
Weaknesses (1)
References (9)
- http://www.securityfocus.com/bid/106220 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://codex.wordpress.org/Version_4.9.9 x_refsource_MISCProductVendor Advisory
- https://github.com/WordPress/WordPress/commit/246a70bdbfac3bd45ff71c7941deef1bb206b19a x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/ x_refsource_MISCRelease NotesVendor Advisory
- https://wordpress.org/support/wordpress-version/version-5-0-1/ x_refsource_MISCRelease NotesVendor Advisory
- https://wpvulndb.com/vulnerabilities/9175 x_refsource_MISCVendor Advisory
- https://www.debian.org/security/2019/dsa-4401 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/ x_refsource_MISCPress/Media CoverageThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/106220 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://codex.wordpress.org/Version_4.9.9 | x_refsource_MISCProductVendor Advisory | |
| https://github.com/WordPress/WordPress/commit/246a70bdbfac3bd45ff71c7941deef1bb206b19a | x_refsource_MISCPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/ | x_refsource_MISCRelease NotesVendor Advisory | |
| https://wordpress.org/support/wordpress-version/version-5-0-1/ | x_refsource_MISCRelease NotesVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/9175 | x_refsource_MISCVendor Advisory | |
| https://www.debian.org/security/2019/dsa-4401 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/ | x_refsource_MISCPress/Media CoverageThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 14, 2018
Updated Aug 5, 2024
Reserved Dec 14, 2018
Link CVE-2018-20149
CISA Vulnrichment
Updated n/a