Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename
Published Nov 17, 2009
6.0
MEDIUMCVSS 2.0
EPSS 8.43%
Description
Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:S/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
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 (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 8.43% (0.08427) | 94.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.43% (0.08427) | 94.27th | v5 (v2026.06.15) |
| Dec 28, 2025 | 10.49% (0.10487) | 92.99th | v4 (v2025.03.14) |
| Dec 27, 2025 | 16.32% (0.16317) | 94.66th | v4 (v2025.03.14) |
| Oct 28, 2025 | 10.49% (0.10487) | 92.89th | v4 (v2025.03.14) |
| Oct 27, 2025 | 16.32% (0.16317) | 94.58th | v4 (v2025.03.14) |
| Oct 1, 2025 | 10.49% (0.10487) | 93.00th | v4 (v2025.03.14) |
| Sep 17, 2025 | 16.32% (0.16317) | 94.62th | v4 (v2025.03.14) |
| Jul 30, 2025 | 12.70% (0.12697) | 93.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.00% (0.08004) | 91.29th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.06% (0.06057) | 84.14th | v4 (v2025.03.14) |
| Mar 24, 2025 | 8.00% (0.08004) | 91.30th | v4 (v2025.03.14) |
| Mar 23, 2025 | 6.06% (0.06057) | 89.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.00% (0.08004) | 91.47th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.86% (0.03863) | 91.82th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.25% (0.02254) | 89.97th | v3 (v2023.03.01) |
| Jul 7, 2024 | 2.32% (0.02323) | 89.82th | v3 (v2023.03.01) |
| May 24, 2024 | 1.65% (0.01651) | 87.56th | v3 (v2023.03.01) |
| Apr 25, 2024 | 1.15% (0.01154) | 84.66th | v3 (v2023.03.01) |
| Feb 8, 2024 | 1.26% (0.01264) | 85.19th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.25% (0.02254) | 87.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 32.17% (0.32173) | 97.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 32.17% (0.32173) | 96.51th | v2 (v2022.01.01) |
References (10)
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html mailing-listx_refsource_FULLDISCBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html mailing-listx_refsource_FULLDISCBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html mailing-listx_refsource_FULLDISCBroken Link
- http://core.trac.wordpress.org/ticket/11122 x_refsource_CONFIRMIssue TrackingVendor Advisory
- http://secunia.com/advisories/37332 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/ x_refsource_CONFIRMPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2009/11/15/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/11/15/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/11/16/1 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.osvdb.org/59958 vdb-entryx_refsource_OSVDBBroken Link
Change history (0)
No recorded changes yet.