CRITICAL
The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via crafted serialized values in a POST request
Published May 14, 2016
9.8
CRITICALCVSS 3.0
EPSS 61.61%
Description
The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via crafted serialized values in a POST request.
Affected products
No data.
- ≤ 2.9.42
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.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
61.61% 0.61612
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.61612
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 (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 61.61% (0.61612) | 99.15th | v5 (v2026.06.15) |
| Sep 22, 2026 | 61.61% (0.61612) | 99.13th | v5 (v2026.06.15) |
| Sep 21, 2026 | 56.41% (0.56411) | 99.04th | v5 (v2026.06.15) |
| Sep 6, 2026 | 61.61% (0.61612) | 99.11th | v5 (v2026.06.15) |
| Sep 5, 2026 | 56.41% (0.56411) | 99.02th | v5 (v2026.06.15) |
| Aug 30, 2026 | 61.61% (0.61612) | 99.11th | v5 (v2026.06.15) |
| Aug 28, 2026 | 56.41% (0.56411) | 99.01th | v5 (v2026.06.15) |
| Aug 24, 2026 | 61.61% (0.61612) | 99.10th | v5 (v2026.06.15) |
| Aug 23, 2026 | 56.41% (0.56411) | 99.01th | v5 (v2026.06.15) |
| Jun 19, 2026 | 61.61% (0.61612) | 99.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 56.84% (0.56840) | 98.94th | v5 (v2026.06.15) |
| Feb 20, 2026 | 80.58% (0.80580) | 99.10th | v4 (v2025.03.14) |
| Mar 30, 2025 | 77.25% (0.77252) | 98.92th | v4 (v2025.03.14) |
| Mar 29, 2025 | 79.24% (0.79237) | 98.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 77.25% (0.77252) | 98.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 92.41% (0.92413) | 99.11th | v3 (v2023.03.01) |
| Aug 15, 2023 | 92.95% (0.92948) | 98.65th | v3 (v2023.03.01) |
| Jul 7, 2023 | 91.76% (0.91762) | 98.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 91.57% (0.91572) | 98.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 85.32% (0.85322) | 99.68th | v2 (v2022.01.01) |
| Feb 4, 2022 | 85.32% (0.85322) | 99.62th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://jvn.jp/en/jp/JVN44657371/index.html third-party-advisoryx_refsource_JVNVendor Advisory
- http://jvndb.jvn.jp/jvndb/JVNDB-2016-000064 third-party-advisoryx_refsource_JVNDBVendor Advisory
- http://packetstormsecurity.com/files/137211/WordPress-Ninja-Forms-Unauthenticated-File-Upload.html x_refsource_MISCExploit
- http://www.pritect.net/blog/ninja-forms-2-9-42-critical-security-vulnerabilities x_refsource_MISC
- http://www.rapid7.com/db/modules/exploit/unix/webapp/wp_ninja_forms_unauthenticated_file_upload x_refsource_MISCExploit
- https://ninjaforms.com/important-security-update-always-hurt-ones-love/ x_refsource_CONFIRM
- https://wordpress.org/plugins/ninja-forms/changelog/ x_refsource_CONFIRM
- https://wpvulndb.com/vulnerabilities/8485 x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://jvn.jp/en/jp/JVN44657371/index.html | third-party-advisoryx_refsource_JVNVendor Advisory | |
| http://jvndb.jvn.jp/jvndb/JVNDB-2016-000064 | third-party-advisoryx_refsource_JVNDBVendor Advisory | |
| http://packetstormsecurity.com/files/137211/WordPress-Ninja-Forms-Unauthenticated-File-Upload.html | x_refsource_MISCExploit | |
| http://www.pritect.net/blog/ninja-forms-2-9-42-critical-security-vulnerabilities | x_refsource_MISC | |
| http://www.rapid7.com/db/modules/exploit/unix/webapp/wp_ninja_forms_unauthenticated_file_upload | x_refsource_MISCExploit | |
| https://ninjaforms.com/important-security-update-always-hurt-ones-love/ | x_refsource_CONFIRM | |
| https://wordpress.org/plugins/ninja-forms/changelog/ | x_refsource_CONFIRM | |
| https://wpvulndb.com/vulnerabilities/8485 | x_refsource_MISC |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner jpcert
Published May 14, 2016
Updated Aug 5, 2024
Reserved Dec 26, 2015
Link CVE-2016-1209
CISA Vulnrichment
Updated n/a