MEDIUM
WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement)
Published Jan 18, 2018
6.1
MEDIUMCVSS 3.0
EPSS 2.02%
Description
WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
6.1 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
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.
2.02% 0.02018
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02018
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.02% (0.02018) | 80.21th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.45% (0.02450) | 82.20th | v5 (v2026.06.15) |
| Nov 21, 2025 | 3.13% (0.03133) | 86.37th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.50% (0.00502) | 63.40th | v4 (v2025.03.14) |
| Oct 4, 2025 | 3.13% (0.03133) | 86.35th | v4 (v2025.03.14) |
| Aug 1, 2025 | 1.84% (0.01843) | 82.30th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.13% (0.03133) | 85.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.39% (0.09388) | 87.86th | v4 (v2025.03.14) |
| Mar 24, 2025 | 3.13% (0.03133) | 85.66th | v4 (v2025.03.14) |
| Mar 23, 2025 | 9.39% (0.09388) | 91.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.13% (0.03133) | 85.98th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.20% (0.00203) | 58.72th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.20% (0.00203) | 57.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00298) | 64.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
Weaknesses (1)
References (4)
- https://codex.wordpress.org/Version_4.9.2 x_refsource_CONFIRMProductVendor Advisory
- https://github.com/WordPress/WordPress/commit/3fe9cb61ee71fcfadb5e002399296fcc1198d850 x_refsource_CONFIRMPatch
- https://wordpress.org/news/2018/01/wordpress-4-9-2-security-and-maintenance-release/ x_refsource_CONFIRMRelease NotesVendor Advisory
- https://wpvulndb.com/vulnerabilities/9006 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://codex.wordpress.org/Version_4.9.2 | x_refsource_CONFIRMProductVendor Advisory | |
| https://github.com/WordPress/WordPress/commit/3fe9cb61ee71fcfadb5e002399296fcc1198d850 | x_refsource_CONFIRMPatch | |
| https://wordpress.org/news/2018/01/wordpress-4-9-2-security-and-maintenance-release/ | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/9006 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 18, 2018
Updated Aug 5, 2024
Reserved Jan 18, 2018
Link CVE-2018-5776
CISA Vulnrichment
Updated n/a