MEDIUM
WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file
Published Oct 12, 2017
4.7
MEDIUMCVSS 3.0
EPSS 2.17%
Description
WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
4.7 MEDIUM NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
2.6 LOW NVD
AV:N/AC:H/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity High
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.
2.17% 0.02175
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02175
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.17% (0.02175) | 81.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.55% (0.02552) | 82.95th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.68% (0.01678) | 80.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 40.91% (0.40913) | 96.07th | v4 (v2025.03.14) |
| Mar 24, 2025 | 1.68% (0.01678) | 80.46th | v4 (v2025.03.14) |
| Mar 23, 2025 | 10.50% (0.10500) | 92.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.26% (0.01265) | 78.07th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00081) | 36.51th | v3 (v2023.03.01) |
| Jun 4, 2024 | 0.08% (0.00081) | 34.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00080) | 32.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
Weaknesses (1)
References (2)
- http://www.securityfocus.com/bid/101294 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://opnsec.com/2017/10/cve-2016-9263-unpatched-xsf-vulnerability-in-wordpress/ x_refsource_MISCMitigationThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101294 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://opnsec.com/2017/10/cve-2016-9263-unpatched-xsf-vulnerability-in-wordpress/ | x_refsource_MISCMitigationThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 12, 2017
Updated Aug 6, 2024
Reserved Nov 10, 2016
Link CVE-2016-9263
CISA Vulnrichment
Updated n/a