MEDIUM
Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via an obfuscated form of the jsinitfunction parameter, as demonstrated by "jsinitfunctio%gn."
Published May 22, 2016
6.1
MEDIUMCVSS 3.0
EPSS 7.35%
Description
Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via an obfuscated form of the jsinitfunction parameter, as demonstrated by "jsinitfunctio%gn."
Affected products
No data.
Configuration 1
- ≤ 2.20.1
No data.
No Red Hat product state for this CVE.
contao-components/mediaelement
Packagist
Introduced 2.14.2 Fixed 2.21.1contao/core
Packagist
Introduced 3.0.0 Fixed 3.5.15mediaelement
npm
Introduced 0 Fixed 2.11.1
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Packagist | contao-components/mediaelement | 2.14.2 | 2.21.1 |
| Packagist | contao/core | 3.0.0 | 3.5.15 |
| npm | mediaelement | 0 | 2.11.1 |
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.
7.35% 0.07351
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07351
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 (46 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.35% (0.07351) | 94.22th | v5 (v2026.06.15) |
| Sep 22, 2026 | 7.35% (0.07351) | 94.12th | v5 (v2026.06.15) |
| Sep 21, 2026 | 9.09% (0.09094) | 95.13th | v5 (v2026.06.15) |
| Sep 6, 2026 | 7.35% (0.07351) | 93.98th | v5 (v2026.06.15) |
| Sep 5, 2026 | 9.09% (0.09094) | 95.02th | v5 (v2026.06.15) |
| Aug 30, 2026 | 6.96% (0.06955) | 93.65th | v5 (v2026.06.15) |
| Aug 28, 2026 | 8.61% (0.08607) | 94.76th | v5 (v2026.06.15) |
| Aug 24, 2026 | 6.96% (0.06955) | 93.61th | v5 (v2026.06.15) |
| Aug 23, 2026 | 8.61% (0.08607) | 94.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.40% (0.06405) | 92.77th | v5 (v2026.06.15) |
| Mar 4, 2026 | 4.15% (0.04155) | 88.45th | v4 (v2025.03.14) |
| Mar 1, 2026 | 11.71% (0.11709) | 93.58th | v4 (v2025.03.14) |
| Feb 4, 2026 | 4.15% (0.04155) | 88.39th | v4 (v2025.03.14) |
| Feb 1, 2026 | 11.71% (0.11709) | 93.54th | v4 (v2025.03.14) |
| Jan 4, 2026 | 4.15% (0.04155) | 88.31th | v4 (v2025.03.14) |
| Jan 1, 2026 | 11.71% (0.11709) | 93.50th | v4 (v2025.03.14) |
| Dec 4, 2025 | 4.15% (0.04155) | 88.24th | v4 (v2025.03.14) |
| Dec 1, 2025 | 11.04% (0.11037) | 93.19th | v4 (v2025.03.14) |
| Nov 4, 2025 | 3.88% (0.03878) | 87.74th | v4 (v2025.03.14) |
| Nov 1, 2025 | 11.04% (0.11037) | 93.16th | v4 (v2025.03.14) |
| Oct 4, 2025 | 3.88% (0.03878) | 87.76th | v4 (v2025.03.14) |
| Oct 1, 2025 | 11.04% (0.11037) | 93.20th | v4 (v2025.03.14) |
| Sep 4, 2025 | 3.83% (0.03834) | 87.71th | v4 (v2025.03.14) |
| Sep 1, 2025 | 8.99% (0.08986) | 92.33th | v4 (v2025.03.14) |
| Aug 4, 2025 | 3.89% (0.03887) | 87.83th | v4 (v2025.03.14) |
| Aug 1, 2025 | 9.16% (0.09164) | 92.40th | v4 (v2025.03.14) |
| Jul 7, 2025 | 3.88% (0.03878) | 87.73th | v4 (v2025.03.14) |
| Jul 4, 2025 | 5.17% (0.05175) | 89.44th | v4 (v2025.03.14) |
| Jul 1, 2025 | 14.28% (0.14280) | 94.11th | v4 (v2025.03.14) |
| Jun 4, 2025 | 5.17% (0.05175) | 89.39th | v4 (v2025.03.14) |
| Jun 1, 2025 | 14.28% (0.14280) | 94.07th | v4 (v2025.03.14) |
| May 15, 2025 | 5.31% (0.05309) | 89.49th | v4 (v2025.03.14) |
| May 4, 2025 | 3.01% (0.03009) | 85.86th | v4 (v2025.03.14) |
| May 1, 2025 | 8.75% (0.08752) | 92.05th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.01% (0.03009) | 85.39th | v4 (v2025.03.14) |
| Mar 29, 2025 | 32.68% (0.32680) | 95.10th | v4 (v2025.03.14) |
| Mar 24, 2025 | 3.01% (0.03009) | 85.37th | v4 (v2025.03.14) |
| Mar 23, 2025 | 18.88% (0.18885) | 94.54th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.18% (0.03182) | 86.11th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.51% (0.00510) | 77.36th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.51% (0.00510) | 75.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.51% (0.00510) | 72.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.78% (0.01776) | 76.86th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.78% (0.01776) | 76.81th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.78% (0.01776) | 74.78th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.78% (0.01776) | 53.99th | v2 (v2022.01.01) |
Weaknesses (1)
References (18)
- http://www.openwall.com/lists/oss-security/2016/05/07/2 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id/1035818 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://codex.wordpress.org/Version_4.5.2 x_refsource_CONFIRMPatchVendor Advisory
- https://contao.org/en/news/contao-3_5_15.html
- https://core.trac.wordpress.org/changeset/37371 x_refsource_CONFIRMPatch
- https://gist.github.com/cure53/df34ea68c26441f3ae98f821ba1feb9c x_refsource_MISCThird Party Advisory
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao-components/mediaelement/CVE-2016-4567.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core/CVE-2016-4567.yaml
- https://github.com/advisories/GHSA-277w-qpxr-2549 Advisory
- https://github.com/johndyer/mediaelement/blob/master/changelog.md x_refsource_CONFIRMPatchVendor Advisory
- https://github.com/johndyer/mediaelement/commit/34834eef8ac830b9145df169ec22016a4350f06e x_refsource_CONFIRMPatchVendor Advisory
- https://github.com/mediaelement/mediaelement/blob/b992ccf5f0c04a207d98bbb0868420751a61ec90/changelog.md?plain=1#L1024
- https://github.com/mediaelement/mediaelement/blob/master/changelog.md
- https://github.com/mediaelement/mediaelement/commit/34834eef8ac830b9145df169ec22016a4350f06e
- https://nvd.nist.gov/vuln/detail/CVE-2016-4567
- https://web.archive.org/web/20170205142412/http://www.securitytracker.com/id/1035818
- https://wordpress.org/news/2016/05/wordpress-4-5-2/ x_refsource_CONFIRMPatchVendor Advisory
- https://wpvulndb.com/vulnerabilities/8488 x_refsource_MISCThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 22, 2016
Updated Aug 6, 2024
Reserved May 7, 2016
Link CVE-2016-4567
CISA Vulnrichment
GHSA-277W-QPXR-2549 Updated n/a