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SCA: security update for getkirby/cms (GHSA-qvjf-922g-pj44)

high Tenable Self-Hosted Container Security Plugin ID 442395

Description

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

 - Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, the underlying
 URL methods for the KirbyTags and image blocks components did not filter out malicious URL values that
 resolve to script execution. The vulnerability affects four first-party Kirby renderers that produce `<a
 href="…">` output from editor-supplied field values: the (`link: …)` KirbyTag, the `link`: parameter of
 the `(image: …)` KirbyTag when it does not resolve to a known file or `self`, the `link` field of the
 built-in image block, and the HTML importer for the `blocks` field (which accepted the same malicious
 input as the image block `link` field). While simple `avascript:` URLs were already deactivated by
 treating them as a relative path and prepending a single slash to the URL, the use of URLs of the format
 `javascript://x%0A…` bypasses this protection. The `vbscript:`, `data:`, `livescript:`, `mocha:` and
 `jar:` schemes are affected by the same underlying gap. This issue has been fixed in versions 4.9.1 and
 5.4.1. (CVE-2026-45368)

Solution

Update the getkirby/cms library and its related packages to version 4.9.1 or later.

See Also

https://github.com/advisories/GHSA-qvjf-922g-pj44

Plugin Details

Severity: High

ID: 442395

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 5/27/2026

Updated: 7/20/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.42

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2026-45368

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

CVSS v4

Risk Factor: High

Base Score: 8.4

Threat Score: 5.8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-45368

cwe: CWE-79