SCA: security update for getkirby/cms (GHSA-q386-w6fg-gmgp)

critical Tenable Cloud Security Plugin ID 417825

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2,
3.8.4.1, and 3.9.6 only affects Kirby sites that use the `Xml` data handler (e.g. `Data::decode($string,
'xml')`) or the `Xml::parse()` method in site or plugin code. The Kirby core does not use any of the
affected methods. XML External Entities (XXE) is a little used feature in the XML markup language that
allows to include data from external files in an XML structure. If the name of the external file can be
controlled by an attacker, this becomes a vulnerability that can be abused for various system impacts like
the disclosure of internal or confidential data that is stored on the server (arbitrary file disclosure)
or to perform network requests on behalf of the server (server-side request forgery, SSRF). Kirby's
`Xml::parse()` method used PHP's `LIBXML_NOENT` constant, which enabled the processing of XML external
entities during the parsing operation. The `Xml::parse()` method is used in the `Xml` data handler (e.g.
`Data::decode($string, 'xml')`). Both the vulnerable method and the data handler are not used in the Kirby
core. However they may be used in site or plugin code, e.g. to parse RSS feeds or other XML files. If
those files are of an external origin (e.g. uploaded by a user or retrieved from an external URL),
attackers may be able to include an external entity in the XML file that will then be processed in the
parsing process. Kirby sites that don't use XML parsing in site or plugin code are *not* affected. The
problem has been patched in Kirby 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6. In all of the mentioned
releases, the maintainers have removed the `LIBXML_NOENT` constant as processing of external entities is
out of scope of the parsing logic. This protects all uses of the method against the described
vulnerability. (CVE-2023-38490)

Plugin Details

Severity: Critical

ID: 417825

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.36

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2023-38490

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/28/2023

Vulnerability Publication Date: 7/27/2023

Reference Information

CVE: CVE-2023-38490

cwe: CWE-611

Detections

Analytics