CVE-2026-54003

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Source
https://cve.org/CVERecord?id=CVE-2026-54003
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54003.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54003
Aliases
Published
2026-07-09T18:36:43Z
Modified
2026-10-28T02:31:04Z
Severity
  • 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header
Details

Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the Panel and create the first admin user because local-IP checks trusted those headers incorrectly. This issue is fixed in versions 4.9.4 and 5.4.4.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-454"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54003.json"
}
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
Fixed
274dca6df93de6eda649f27f5367ddbc8e0f1fe1
Introduced
2ff182ba39ddea19fa1615bd3733f734b5e53842
Fixed
3f96d3b9ccda22f0d2f901b96376b5d08556ad75
Fixed
1c7fee90e49153cf9ca4a6ec17481d25fbedc48d
Fixed
3423f66c01dbc0455862e23ee699d2aa469f3234
Fixed
66a3a14bf0892d320723ba766cd5f1d33a51d15b
Fixed
ab992dc149610b90e337c2955ab6ccb7f72ffb3a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "4.9.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "5.0.0"
                },
                {
                    "fixed":  "5.4.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "1c7fee90e49153cf9ca4a6ec17481d25fbedc48d"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "3423f66c01dbc0455862e23ee699d2aa469f3234"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "66a3a14bf0892d320723ba766cd5f1d33a51d15b"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "ab992dc149610b90e337c2955ab6ccb7f72ffb3a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.9.4",
            "range":  [
                {
                    "fixed":  "274dca6df93de6eda649f27f5367ddbc8e0f1fe1"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "5.4.4",
            "range":  [
                {
                    "fixed":  "3f96d3b9ccda22f0d2f901b96376b5d08556ad75"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

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
4.9.1
4.9.2
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
5.4.1
5.4.2
5.4.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54003.json"