CRITICAL
In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call
Published Dec 14, 2018
9.8
CRITICALCVSS 3.0
EPSS 26.82%
Description
In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 8.0
- 9.0
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.
26.82% 0.26819
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.26819
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 (63 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 26.82% (0.26819) | 97.97th | v5 (v2026.06.15) |
| Sep 22, 2026 | 26.82% (0.26819) | 97.94th | v5 (v2026.06.15) |
| Sep 21, 2026 | 20.50% (0.20498) | 97.44th | v5 (v2026.06.15) |
| Sep 6, 2026 | 26.82% (0.26819) | 97.89th | v5 (v2026.06.15) |
| Sep 5, 2026 | 20.50% (0.20498) | 97.39th | v5 (v2026.06.15) |
| Aug 30, 2026 | 26.82% (0.26819) | 97.88th | v5 (v2026.06.15) |
| Aug 28, 2026 | 20.50% (0.20498) | 97.37th | v5 (v2026.06.15) |
| Aug 24, 2026 | 26.82% (0.26819) | 97.87th | v5 (v2026.06.15) |
| Aug 23, 2026 | 20.50% (0.20498) | 97.37th | v5 (v2026.06.15) |
| Aug 2, 2026 | 26.82% (0.26819) | 97.83th | v5 (v2026.06.15) |
| Jul 29, 2026 | 29.83% (0.29825) | 98.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 30.89% (0.30887) | 98.01th | v5 (v2026.06.15) |
| Mar 4, 2026 | 54.86% (0.54862) | 97.99th | v4 (v2025.03.14) |
| Mar 1, 2026 | 61.70% (0.61701) | 98.31th | v4 (v2025.03.14) |
| Feb 4, 2026 | 54.86% (0.54862) | 97.97th | v4 (v2025.03.14) |
| Feb 1, 2026 | 61.70% (0.61701) | 98.29th | v4 (v2025.03.14) |
| Jan 4, 2026 | 54.86% (0.54862) | 97.94th | v4 (v2025.03.14) |
| Jan 1, 2026 | 61.70% (0.61701) | 98.27th | v4 (v2025.03.14) |
| Dec 28, 2025 | 54.86% (0.54862) | 97.93th | v4 (v2025.03.14) |
| Dec 27, 2025 | 45.63% (0.45625) | 97.51th | v4 (v2025.03.14) |
| Dec 4, 2025 | 54.86% (0.54862) | 97.92th | v4 (v2025.03.14) |
| Dec 1, 2025 | 61.70% (0.61701) | 98.25th | v4 (v2025.03.14) |
| Nov 21, 2025 | 54.86% (0.54862) | 97.92th | v4 (v2025.03.14) |
| Nov 18, 2025 | 33.83% (0.33833) | 96.72th | v4 (v2025.03.14) |
| Nov 4, 2025 | 54.86% (0.54862) | 97.92th | v4 (v2025.03.14) |
| Nov 1, 2025 | 61.70% (0.61701) | 98.25th | v4 (v2025.03.14) |
| Oct 28, 2025 | 54.86% (0.54862) | 97.91th | v4 (v2025.03.14) |
| Oct 27, 2025 | 45.63% (0.45625) | 97.47th | v4 (v2025.03.14) |
| Oct 4, 2025 | 54.86% (0.54862) | 97.97th | v4 (v2025.03.14) |
| Oct 1, 2025 | 61.70% (0.61701) | 98.29th | v4 (v2025.03.14) |
| Sep 4, 2025 | 46.04% (0.46043) | 97.56th | v4 (v2025.03.14) |
| Sep 1, 2025 | 54.60% (0.54597) | 97.97th | v4 (v2025.03.14) |
| Aug 4, 2025 | 46.04% (0.46043) | 97.53th | v4 (v2025.03.14) |
| Aug 1, 2025 | 54.60% (0.54597) | 97.94th | v4 (v2025.03.14) |
| Jul 30, 2025 | 46.04% (0.46043) | 97.53th | v4 (v2025.03.14) |
| Jul 4, 2025 | 52.81% (0.52815) | 97.80th | v4 (v2025.03.14) |
| Jul 1, 2025 | 59.82% (0.59820) | 98.15th | v4 (v2025.03.14) |
| Jun 4, 2025 | 52.81% (0.52815) | 97.78th | v4 (v2025.03.14) |
| Jun 1, 2025 | 59.82% (0.59820) | 98.14th | v4 (v2025.03.14) |
| May 4, 2025 | 52.81% (0.52815) | 97.77th | v4 (v2025.03.14) |
| May 1, 2025 | 59.82% (0.59820) | 98.13th | v4 (v2025.03.14) |
| Mar 30, 2025 | 52.81% (0.52815) | 97.72th | v4 (v2025.03.14) |
| Mar 29, 2025 | 77.51% (0.77514) | 98.69th | v4 (v2025.03.14) |
| Mar 28, 2025 | 52.81% (0.52815) | 97.72th | v4 (v2025.03.14) |
| Mar 27, 2025 | 77.51% (0.77514) | 98.90th | v4 (v2025.03.14) |
| Mar 24, 2025 | 69.77% (0.69768) | 98.58th | v4 (v2025.03.14) |
| Mar 23, 2025 | 77.51% (0.77514) | 98.91th | v4 (v2025.03.14) |
| Mar 20, 2025 | 69.77% (0.69768) | 98.59th | v4 (v2025.03.14) |
| Mar 19, 2025 | 77.51% (0.77514) | 98.92th | v4 (v2025.03.14) |
| Mar 17, 2025 | 69.77% (0.69768) | 98.56th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.26% (0.01257) | 85.31th | v3 (v2023.03.01) |
| Jun 15, 2024 | 1.77% (0.01766) | 88.07th | v3 (v2023.03.01) |
| May 6, 2024 | 1.83% (0.01829) | 88.16th | v3 (v2023.03.01) |
| Dec 8, 2023 | 1.58% (0.01578) | 85.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.26% (0.01256) | 83.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 17.17% (0.17166) | 96.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 17.17% (0.17166) | 95.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.17% (0.17166) | 93.10th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.45% (0.09448) | 86.95th | v1 |
| Jan 6, 2022 | 9.45% (0.09448) | 86.79th | v1 |
| Nov 17, 2021 | 9.45% (0.09448) | 94.21th | v1 |
| Sep 1, 2021 | 2.27% (0.02273) | 77.89th | v1 |
| Apr 14, 2021 | 2.27% (0.02273) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://www.securityfocus.com/bid/106220 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are x_refsource_MISCExploitThird Party Advisory
- https://codex.wordpress.org/Version_4.9.9 x_refsource_MISCProductVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/ x_refsource_MISCRelease NotesVendor Advisory
- https://wordpress.org/support/wordpress-version/version-5-0-1/ x_refsource_MISCRelease NotesVendor Advisory
- https://wpvulndb.com/vulnerabilities/9171 x_refsource_MISCVendor Advisory
- https://www.debian.org/security/2019/dsa-4401 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/ x_refsource_MISCPress/Media CoverageThird Party Advisory
- https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/ x_refsource_MISCPress/Media CoverageThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 14, 2018
Updated Aug 5, 2024
Reserved Dec 14, 2018
Link CVE-2018-20148
CISA Vulnrichment
Updated n/a