Kirby
Kirby 2.3
Kirby 2.3
The Kirby 2.3 reached end of service life on Jan 1, 2021 — Kirby no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
End of Service LifeEOSL Date: Jan 1, 2021
Issue Management
24/7 engineers own your Kirby 2.3 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
- kirby
- release
- 2.3
- product Label
- Kirby
- release Label
- 2.3
- codename
- lts
- latest Version
- 2.3.3
- release Date
- 2016-05-17
- maintained
- source Url
- https://endoflife.date/kirby
Lifecycle Dates
- End of Service Life
- Jan 1, 2021
- Last OEM Support
- Jan 1, 2021
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Kirby 2.3 — 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 Kirby 2.3?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Kirby 2.3 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.
Kirby 2.3 Support: Frequently Asked Questions
Is the Kirby 2.3 still supported?
Kirby ended support for the Kirby 2.3 on Jan 1, 2021 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the Kirby 2.3 end of service life (EOSL) date?
Kirby lists the end of service life for the Kirby 2.3 as Jan 1, 2021.
Can I keep using the Kirby 2.3 after its EOSL date?
Yes. EOSL means Kirby stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Kirby 2.3 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting Kirby 2.3
22 published CVEs affect the Kirby 2.3, including 8 rated critical or high severity. Kirby no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2024-26483 | HIGH | 8.8 | Feb 22, 2024 | An arbitrary file upload vulnerability in the Profile Image module of Kirby CMS v4.1.0 allows attackers to execute arbitrary code via a crafted PDF file. |
| CVE-2024-41964 | HIGH | 8.1 | Aug 29, 2024 | Kirby is a CMS targeting designers and editors. Kirby allows to restrict the permissions of specific user roles. Users of that role can only perform permitted actions. Permissions for creating and deleting languages have already existed and could be configured, but were not enforced by Kirby's frontend or backend code. A permission for updating existing languages has not existed before the patched versions. So disabling the languages.* wildcard permission for a role could not have prohibited upd |
| CVE-2026-34587 | HIGH | 7.6 | Apr 24, 2026 | Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint (`site/blueprints/users/...`). It is also possible to customize the permissions for each target model in the model blueprints (such as in `site/blueprints/pages/...`) using the `options` feature. The permissions and options togeth |
| CVE-2021-29460 | HIGH | 7.6 | Apr 27, 2021 | Kirby is an open source CMS. An editor with write access to the Kirby Panel can upload an SVG file that contains harmful content like `<script>` tags. The direct link to that file can be sent to other users or visitors of the site. If the victim opens that link in a browser where they are logged in to Kirby, the script will run and can for example trigger requests to Kirby's API with the permissions of the victim. This vulnerability is critical if you might have potential attackers in your group |
| CVE-2026-42137 | HIGH | 7.1 | May 9, 2026 | Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, `pages.access/list` and `files.access/list` permissions are not consistently checked in the Panel and REST API. This issue has been patched in versions 4.9.0 and 5.4.0. |
| CVE-2026-42069 | HIGH | 7.1 | May 9, 2026 | Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, read access to site, user and role information is not gated by permissions. This issue has been patched in versions 4.9.0 and 5.4.0. |
| CVE-2026-41325 | HIGH | 7.1 | Apr 24, 2026 | Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint (`site/blueprints/users/...`). It is also possible to customize the permissions for each target model in the model blueprints (such as in `site/blueprints/pages/...`) using the `options` feature. The permissions and options together control the authorization of use |
| CVE-2021-32735 | HIGH | 7.1 | Jul 2, 2021 | Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. K |
| CVE-2026-32870 | MEDIUM | 6.9 | Apr 24, 2026 | Kirby is an open-source content management system. Kirby's `Xml::value()` method has special handling for `<![CDATA[ ]]>` blocks. If the input value is already valid `CDATA`, it is not escaped a second time but allowed to pass through. However, prior to versions 4.9.0 and 5.4.0, it was possible to trick this check into allowing values that only contained a valid `CDATA` block but also contained other structured data outside of the `CDATA` block. This structured data would then also be allowed to |
| CVE-2020-26255 | MEDIUM | 6.8 | Dec 8, 2020 | Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirb |
| CVE-2020-26253 | MEDIUM | 6.8 | Dec 8, 2020 | Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.3.6, and Kirby Panel before version 2.5.14 there is a vulnerability in which the admin panel may be accessed if hosted on a .dev domain. In order to protect new installations on public servers that don't have an admin account for the Panel yet, we block account registration there by default. This is a security feature, which we implemented years ago in Kirby 2. It helps to avoid that you forget registering your first admin account on a |
| CVE-2026-29905 | MEDIUM | 6.5 | Mar 26, 2026 | Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError. |
| CVE-2022-39315 | MEDIUM | 6.5 | Oct 25, 2022 | Kirby is a Content Management System. Prior to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks because the attack does not scale to brute force. The problem has been patched in Kirby 3.5.8.2, Kirby 3.6.6.2, Kirby 3.7.5.1, and Kirby 3.8.1. In all of the mentioned releases, the maintainers have rewritten the affected code |
| CVE-2025-31493 | MEDIUM | 6.3 | May 13, 2025 | Kirby is an open-source content management system. A vulnerability in versions prior to 3.9.8.3, 3.10.1.2, and 4.7.1 affects all Kirby sites that use the `collection()` helper or `$kirby->collection()` method with a dynamic collection name (such as a collection name that depends on request or user data). Sites that only use fixed calls to the `collection()` helper/`$kirby->collection()` method (i.e. calls with a simple string for the collection name) are *not* affected. A missing path traversal |
| CVE-2025-30159 | MEDIUM | 6.3 | May 13, 2025 | Kirby is an open-source content management system. A vulnerability in versions prior to 3.9.8.3, 3.10.1.2, and 4.7.1 affects all Kirby sites that use the `snippet()` helper or `$kirby->snippet()` method with a dynamic snippet name (such as a snippet name that depends on request or user data). Sites that only use fixed calls to the `snippet()` helper/`$kirby->snippet()` method (i.e. calls with a simple string for the snippet name) are *not* affected. A missing path traversal check allowed attacke |
| CVE-2022-36037 | MEDIUM | 5.9 | Aug 29, 2022 | kirby is a content management system (CMS) that adapts to many different projects and helps you build your own ideal interface. Cross-site scripting (XSS) is a type of vulnerability that allows execution of any kind of JavaScript code inside the Panel session of the same or other users. In the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim. If bad actors gain access to your group of authenticated Panel users they can escalate their priv |
| CVE-2026-42174 | MEDIUM | 5.3 | May 9, 2026 | Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, user avatar creation, replacement and deletion are not gated by user update permissions. This issue has been patched in versions 4.9.0 and 5.4.0. |
| CVE-2026-42051 | MEDIUM | 5.3 | May 9, 2026 | Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0. |
| CVE-2026-40099 | MEDIUM | 5.3 | Apr 24, 2026 | Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint (`site/blueprints/users/...`). It is also possible to customize the permissions for each target model in the model blueprints (such as in `site/blueprints/pages/...`) using the `options` feature. The permissions and options together control the authorization of use |
| CVE-2024-26481 | MEDIUM | 4.7 | Feb 22, 2024 | Kirby CMS v4.1.0 was discovered to contain a reflected self-XSS vulnerability via the URL parameter. |
Showing the 20 most severe of 22 known CVEs.
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