CVE-2026-45089

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Source
https://cve.org/CVERecord?id=CVE-2026-45089
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45089.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45089
Aliases
Published
2026-05-27T17:33:44.061Z
Modified
2026-07-08T08:15:13.227240680Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L CVSS Calculator
Summary
Dalfox: Unauthenticated Arbitrary File Create/Append via `output` Option in Dalfox Server Mode
Details

Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, when dalfox is run in REST API server mode, the output, output-all, and debug fields in model.Options are JSON-tagged and deserialized directly from the attacker's request body, then propagated unchanged through dalfox.Initialize into the scan engine's logging path. The logger opens the attacker-supplied path with os.OAPPEND|os.OCREATE|os.O_WRONLY and writes scan log lines to it. Critically, this file write block lives outside the IsLibrary guard in DalLog, so it executes even in server/library mode where file output was never intended to operate. Because no API key is required in the default configuration, an unauthenticated network caller can create or append to any file writable by the dalfox process on the host filesystem. This vulnerability is fixed in 2.13.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45089.json",
    "cwe_ids": [
        "CWE-306",
        "CWE-434",
        "CWE-73"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/hahwul/dalfox

Affected ranges

Type
GIT
Repo
https://github.com/hahwul/dalfox
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1dcb01cbb19698f4e2ccf60ccfcf17810970c8ec
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.13.0"
        }
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.2.0
v1.2.1
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.1.0
v2.1.1
v2.1.2
v2.10.0
v2.11.0
v2.12.0
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.2.6
v2.2.7
v2.2.8
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.3.5
v2.3.6
v2.3.7
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.4.7
v2.4.8
v2.4.9
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.5.5
v2.6.0
v2.6.1
v2.6.2
v2.6.3
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.7.5
v2.8.0
v2.8.1
v2.8.2
v2.9.0
v2.9.1
v2.9.2
v2.9.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45089.json"