WordPress third-party support
WordPress 4.9
WordPress 4.9
Third-party support for the WordPress 4.9: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance — independent of the vendor contract.
Issue Management
24/7 engineers own your WordPress 4.9 incidents end to end.
Vulnerability Remediation
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Compliance Maintenance
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- wordpress
- release
- 4.9
- product Label
- WordPress
- release Label
- 4.9
- codename
- lts
- latest Version
- 4.9.35
- release Date
- 2017-11-16
- maintained
- true
- source Url
- https://endoflife.date/wordpress
Lifecycle Dates
- Last OEM Support
- Dec 6, 2018
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for WordPress 4.9 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for WordPress 4.9?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for WordPress 4.9 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
WordPress 4.9 Support: Frequently Asked Questions
Is the WordPress 4.9 still supported?
Yes. The WordPress 4.9 is currently supported by WordPress, and third-party support is available as an alternative — issue management, vulnerability remediation, and compliance help independent of the vendor contract.
How much does third-party support for the WordPress 4.9 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location. You get an indicative price within 24 hours and a firm quote within 48.
Known Vulnerabilities Affecting WordPress 4.9
88 published CVEs affect the WordPress 4.9, including 31 rated critical or high severity. Our 24/7 engineers help you assess exposure, prioritize fixes and apply available patches.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2020-36326 | CRITICAL | 9.8 | Apr 28, 2021 | PHPMailer 6.1.8 through 6.4.0 allows object injection through Phar Deserialization via addAttachment with a UNC pathname. NOTE: this is similar to CVE-2018-19296, but arose because 6.1.8 fixed a functionality problem in which UNC pathnames were always considered unreadable by PHPMailer, even in safe contexts. As an unintended side effect, this fix eliminated the code that blocked addAttachment exploitation. |
| CVE-2020-28037 | CRITICAL | 9.8 | Nov 2, 2020 | is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation). |
| CVE-2020-28036 | CRITICAL | 9.8 | Nov 2, 2020 | wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post. |
| CVE-2020-28035 | CRITICAL | 9.8 | Nov 2, 2020 | WordPress before 5.5.2 allows attackers to gain privileges via XML-RPC. |
| CVE-2020-28032 | CRITICAL | 9.8 | Nov 2, 2020 | WordPress before 5.5.2 mishandles deserialization requests in wp-includes/Requests/Utility/FilteredIterator.php. |
| CVE-2019-20041 | CRITICAL | 9.8 | Dec 27, 2019 | wp_kses_bad_protocol in wp-includes/kses.php in WordPress before 5.3.1 mishandles the HTML5 colon named entity, allowing attackers to bypass input sanitization, as demonstrated by the javascript: substring. |
| CVE-2019-17670 | CRITICAL | 9.8 | Oct 17, 2019 | WordPress before 5.2.4 has a Server Side Request Forgery (SSRF) vulnerability because Windows paths are mishandled during certain validation of relative URLs. |
| CVE-2019-17669 | CRITICAL | 9.8 | Oct 17, 2019 | WordPress before 5.2.4 has a Server Side Request Forgery (SSRF) vulnerability because URL validation does not consider the interpretation of a name as a series of hex characters. |
| CVE-2018-20148 | CRITICAL | 9.8 | Dec 14, 2018 | 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. |
| CVE-2020-28039 | CRITICAL | 9.1 | Nov 2, 2020 | is_protected_meta in wp-includes/meta.php in WordPress before 5.5.2 allows arbitrary file deletion because it does not properly determine whether a meta key is considered protected. |
| CVE-2019-17675 | HIGH | 8.8 | Oct 17, 2019 | WordPress before 5.2.4 does not properly consider type confusion during validation of the referer in the admin pages, possibly leading to CSRF. |
| CVE-2019-9787 | HIGH | 8.8 | Mar 14, 2019 | 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. |
| CVE-2019-8942 | HIGH | 8.8 | Feb 20, 2019 | WordPress before 4.9.9 and 5.x before 5.0.1 allows remote code execution because an _wp_attached_file Post Meta entry can be changed to an arbitrary string, such as one ending with a .jpg?file.php substring. An attacker with author privileges can execute arbitrary code by uploading a crafted image containing PHP code in the Exif metadata. Exploitation can leverage CVE-2019-8943. |
| CVE-2018-19296 | HIGH | 8.8 | Nov 16, 2018 | PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack. |
| CVE-2018-1000773 | HIGH | 8.8 | Sep 6, 2018 | WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time. |
| CVE-2018-12895 | HIGH | 8.8 | Jun 26, 2018 | WordPress through 4.9.6 allows Author users to execute arbitrary code by leveraging directory traversal in the wp-admin/post.php thumb parameter, which is passed to the PHP unlink function and can delete the wp-config.php file. This is related to missing filename validation in the wp-includes/post.php wp_delete_attachment function. The attacker must have capabilities for files and posts that are normally available only to the Author, Editor, and Administrator roles. The attack methodology is to |
| CVE-2017-17091 | HIGH | 8.8 | Dec 2, 2017 | wp-admin/user-new.php in WordPress before 4.9.1 sets the newbloguser key to a string that can be directly derived from the user ID, which allows remote attackers to bypass intended access restrictions by entering this string. |
| CVE-2020-11026 | HIGH | 8.7 | Apr 30, 2020 | In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33). |
| CVE-2026-119977 | HIGH | 8.1 | Oct 31, 2026 | WordPress Core is vulnerable to Remote Code Execution in versions 4.7 through 7.1.3. This is due to predictable, web-accessible staging paths used during full-package core upgrades. This makes it possible for unauthenticated attackers to execute code on the server during the upgrade window. |
| CVE-2026-87902 | HIGH | 8.1 | Sep 22, 2026 | An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE. |
Showing the 20 most severe of 88 known CVEs.
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