HIGH
WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration
Published Mar 14, 2019
8.8
HIGHCVSS 3.0
EPSS 38.70%
Description
WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access, which allows arbitrary changes to .php files. This is related to wp-admin/includes/ajax-actions.php and wp-includes/comment.php.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
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.
38.70% 0.38699
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.38699
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (66 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 38.70% (0.38699) | 98.54th | v5 (v2026.06.15) |
| Sep 22, 2026 | 38.70% (0.38699) | 98.52th | v5 (v2026.06.15) |
| Sep 21, 2026 | 28.63% (0.28635) | 98.10th | v5 (v2026.06.15) |
| Sep 6, 2026 | 38.70% (0.38699) | 98.48th | v5 (v2026.06.15) |
| Sep 5, 2026 | 28.63% (0.28635) | 98.06th | v5 (v2026.06.15) |
| Aug 30, 2026 | 38.70% (0.38699) | 98.47th | v5 (v2026.06.15) |
| Aug 28, 2026 | 28.63% (0.28635) | 98.05th | v5 (v2026.06.15) |
| Aug 25, 2026 | 38.70% (0.38699) | 98.47th | v5 (v2026.06.15) |
| Aug 24, 2026 | 40.79% (0.40788) | 98.54th | v5 (v2026.06.15) |
| Aug 23, 2026 | 28.63% (0.28635) | 98.04th | v5 (v2026.06.15) |
| Aug 2, 2026 | 40.79% (0.40788) | 98.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 43.75% (0.43750) | 98.57th | v5 (v2026.06.15) |
| Apr 1, 2026 | 81.02% (0.81017) | 99.15th | v4 (v2025.03.14) |
| Mar 8, 2026 | 83.10% (0.83098) | 99.24th | v4 (v2025.03.14) |
| Mar 4, 2026 | 85.08% (0.85079) | 99.33th | v4 (v2025.03.14) |
| Mar 1, 2026 | 76.07% (0.76071) | 98.90th | v4 (v2025.03.14) |
| Feb 4, 2026 | 85.08% (0.85079) | 99.33th | v4 (v2025.03.14) |
| Feb 1, 2026 | 76.07% (0.76071) | 98.89th | v4 (v2025.03.14) |
| Jan 4, 2026 | 85.08% (0.85079) | 99.32th | v4 (v2025.03.14) |
| Jan 1, 2026 | 76.07% (0.76071) | 98.89th | v4 (v2025.03.14) |
| Dec 27, 2025 | 84.59% (0.84587) | 99.29th | v4 (v2025.03.14) |
| Dec 4, 2025 | 87.00% (0.86997) | 99.40th | v4 (v2025.03.14) |
| Dec 1, 2025 | 79.69% (0.79694) | 99.05th | v4 (v2025.03.14) |
| Nov 21, 2025 | 87.00% (0.86997) | 99.39th | v4 (v2025.03.14) |
| Nov 18, 2025 | 85.59% (0.85594) | 99.46th | v4 (v2025.03.14) |
| Nov 4, 2025 | 87.00% (0.86997) | 99.39th | v4 (v2025.03.14) |
| Nov 1, 2025 | 80.23% (0.80226) | 99.08th | v4 (v2025.03.14) |
| Oct 28, 2025 | 87.00% (0.86997) | 99.39th | v4 (v2025.03.14) |
| Oct 27, 2025 | 84.59% (0.84587) | 99.28th | v4 (v2025.03.14) |
| Oct 4, 2025 | 87.84% (0.87837) | 99.44th | v4 (v2025.03.14) |
| Oct 1, 2025 | 80.38% (0.80385) | 99.09th | v4 (v2025.03.14) |
| Sep 4, 2025 | 85.69% (0.85692) | 99.34th | v4 (v2025.03.14) |
| Sep 1, 2025 | 76.04% (0.76036) | 98.88th | v4 (v2025.03.14) |
| Aug 4, 2025 | 85.69% (0.85692) | 99.33th | v4 (v2025.03.14) |
| Aug 1, 2025 | 76.04% (0.76036) | 98.88th | v4 (v2025.03.14) |
| Jul 30, 2025 | 85.69% (0.85692) | 99.33th | v4 (v2025.03.14) |
| Jul 4, 2025 | 87.00% (0.86996) | 99.39th | v4 (v2025.03.14) |
| Jul 1, 2025 | 78.66% (0.78659) | 98.99th | v4 (v2025.03.14) |
| Jun 4, 2025 | 87.00% (0.86996) | 99.39th | v4 (v2025.03.14) |
| Jun 1, 2025 | 78.66% (0.78659) | 98.98th | v4 (v2025.03.14) |
| May 4, 2025 | 87.00% (0.86996) | 99.38th | v4 (v2025.03.14) |
| May 1, 2025 | 78.66% (0.78659) | 98.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 87.00% (0.86996) | 99.40th | v4 (v2025.03.14) |
| Feb 21, 2025 | 35.45% (0.35452) | 97.22th | v3 (v2023.03.01) |
| Dec 17, 2024 | 21.40% (0.21399) | 96.43th | v3 (v2023.03.01) |
| Oct 31, 2024 | 47.19% (0.47193) | 97.55th | v3 (v2023.03.01) |
| Oct 7, 2024 | 50.35% (0.50350) | 97.58th | v3 (v2023.03.01) |
| Aug 25, 2024 | 48.45% (0.48445) | 97.54th | v3 (v2023.03.01) |
| Aug 4, 2024 | 62.94% (0.62944) | 97.88th | v3 (v2023.03.01) |
| Jul 13, 2024 | 70.03% (0.70028) | 98.05th | v3 (v2023.03.01) |
| Jun 22, 2024 | 75.49% (0.75494) | 98.18th | v3 (v2023.03.01) |
| Mar 7, 2024 | 83.67% (0.83673) | 98.36th | v3 (v2023.03.01) |
| Feb 21, 2024 | 83.47% (0.83472) | 98.34th | v3 (v2023.03.01) |
| Nov 29, 2023 | 86.48% (0.86480) | 98.28th | v3 (v2023.03.01) |
| Oct 8, 2023 | 88.76% (0.88759) | 98.34th | v3 (v2023.03.01) |
| Sep 10, 2023 | 86.36% (0.86362) | 98.16th | v3 (v2023.03.01) |
| Jul 8, 2023 | 88.76% (0.88759) | 98.23th | v3 (v2023.03.01) |
| Jun 9, 2023 | 85.78% (0.85783) | 98.05th | v3 (v2023.03.01) |
| Mar 21, 2023 | 89.15% (0.89148) | 98.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 88.32% (0.88317) | 98.04th | v3 (v2023.03.01) |
| Mar 6, 2023 | 61.25% (0.61250) | 98.94th | v2 (v2022.01.01) |
| Feb 4, 2022 | 61.25% (0.61250) | 98.67th | v2 (v2022.01.01) |
| Feb 3, 2022 | 15.90% (0.15901) | 90.17th | v1 |
| Jan 6, 2022 | 15.90% (0.15901) | 90.06th | v1 |
| Sep 1, 2021 | 15.90% (0.15901) | 97.32th | v1 |
| Apr 14, 2021 | 15.90% (0.15901) | 0.00th | v1 |
Weaknesses (1)
References (8)
- http://www.securityfocus.com/bid/107411 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://blog.ripstech.com/2019/wordpress-csrf-to-rce/ x_refsource_MISCExploitThird Party Advisory
- https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html mailing-listx_refsource_MLIST
- https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/ x_refsource_MISCRelease NotesVendor Advisory
- https://wordpress.org/support/wordpress-version/version-5-1-1/ x_refsource_MISCRelease NotesVendor Advisory
- https://wpvulndb.com/vulnerabilities/9230 x_refsource_MISC
- https://www.debian.org/security/2020/dsa-4677 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/107411 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://blog.ripstech.com/2019/wordpress-csrf-to-rce/ | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b | x_refsource_MISCPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html | mailing-listx_refsource_MLIST | |
| https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/ | x_refsource_MISCRelease NotesVendor Advisory | |
| https://wordpress.org/support/wordpress-version/version-5-1-1/ | x_refsource_MISCRelease NotesVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/9230 | x_refsource_MISC | |
| https://www.debian.org/security/2020/dsa-4677 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 14, 2019
Updated Aug 4, 2024
Reserved Mar 14, 2019
Link CVE-2019-9787
CISA Vulnrichment
Updated n/a