CVE-2026-45368

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Source
https://cve.org/CVERecord?id=CVE-2026-45368
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45368.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45368
Aliases
Published
2026-07-16T21:49:46.244Z
Modified
2026-07-18T03:47:23.731788048Z
Severity
  • 8.4 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Kirby: Cross-site scripting (XSS) from links in KirbyTags and image blocks in the site frontend
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45368.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/getkirby/kirby

Affected ranges

Type
GIT
Repo
https://github.com/getkirby/kirby
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
2ff182ba39ddea19fa1615bd3733f734b5e53842
Fixed
2b37e83368eaf852414db77049d21e61c66ed80f
Fixed
b583392a724601698426c21c593b6a3d6d702c49
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.9.1"
        },
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.4.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

3.*
3.0.0
3.0.1
3.0.2
3.0.2-rc.1
3.0.3
3.0.3-rc.1
3.0.3-rc.2
3.0.3-rc.3
3.1.0
3.1.0-rc.1
3.1.1
3.1.2
3.1.2-rc.1
3.1.3
3.1.3-rc.1
3.1.4
3.1.4-rc.1
3.2.0
3.2.0-rc.1
3.2.0-rc.2
3.2.0-rc.3
3.2.0-rc.4
3.2.1
3.2.1-rc.1
3.2.2
3.2.3-rc.1
3.2.5
3.2.5-rc.1
3.2.5-rc.2
3.3.0
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4.0
3.4.1
3.4.2
3.5.0
3.5.0-rc.1
3.5.0-rc.2
3.5.0-rc.3
3.5.0-rc.4
3.5.0-rc.5
3.5.0-rc.6
3.5.0-rc.7
3.5.1
3.5.1-rc.1
3.5.2
3.5.3
3.5.3.1
3.5.4
3.5.5
3.5.6
3.5.7
3.5.7.1
3.6.0
3.6.1.1
3.6.2
3.6.2-rc.1
3.6.2-rc.2
3.6.2-rc.3
3.6.3
3.6.3.1
3.6.4
3.6.5
3.6.6
3.7.0
3.7.0.1
3.7.0.2
3.7.1
3.7.2
3.7.2.1
3.7.3
3.7.4
3.7.4-rc.1
3.7.5
3.8.0
3.8.1
3.8.1.1
3.8.2
3.8.3
3.8.4
3.9.0
3.9.1
3.9.2
3.9.3
3.9.4
3.9.5
3.9.6
3.9.6-rc.1
3.9.6.1
3.9.7
3.9.8
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.2.0
4.3.0
4.3.1
4.4.0
4.4.1
4.5.0
4.6.0
4.6.1
4.7.0
4.7.1
4.7.2
4.8.0
4.9.0
5.*
5.0.0
5.0.1
5.0.2
5.0.3
5.0.4
5.1.0
5.1.1
5.1.2
5.1.3
5.1.4
5.2.0
5.2.1
5.2.2
5.2.3
5.3.0
5.3.1
5.3.2
5.3.3
5.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45368.json"