Home/CVE/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
CVE

CVE-2020-26255

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

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 Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability.

Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.

MEDIUM · CVSS 6.8 EPSS 0.01108
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-434Unrestricted Upload of File with Dangerous Type
▤

Affected Products & Versions

2
getkirby kirby< 3.4.5
getkirby panel< 2.5.14
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Control Panel DLL Load
producthighControl Panel Items
producthighSystem Control Panel Item Loaded From Uncommon Location
▣

Scoring & Timeline

6.8
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Dec 2020 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/getkirby-v2/panel/commit/5a569d4e3ddaea2b6628d7ec1472a3e8bc410881PatchThird Party Advisory
https://github.com/getkirby/kirby/commit/db8f371b13036861c9cc5ba3e85e27f73fce5e09PatchThird Party Advisory
https://github.com/getkirby/kirby/releases/tag/3.4.5Release NotesThird Party Advisory
https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qwRelease NotesThird Party Advisory
https://packagist.org/packages/getkirby/cmsProductThird Party Advisory
https://packagist.org/packages/getkirby/panelProductThird Party Advisory
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