CVE-2026-73492

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Source
https://cve.org/CVERecord?id=CVE-2026-73492
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73492.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73492
Aliases
Downstream
DEBIAN (1)
openSUSE (2)
SUSE (2)
UBUNTU (1)
Related
openSUSE (2)
SUSE (2)
Published
2026-08-12T21:00:24Z
Modified
2026-10-28T02:30:53Z
Severity
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
Loofah `allowed_uri?` does not detect `javascript:` URIs split by numeric character references without semicolons
Details

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. From 2.25.0 until 2.25.2, Loofah::HTML5::Scrub.allowed_uri? does not reject javascript: or vbscript: URIs whose scheme is split by semicolon-less numeric character references such as &#58, &#9, &#10, or &#13. CGI.unescapeHTML leaves these references encoded, so allowed_uri? reports the URL safe even though a browser decodes an encoded colon or strips encoded whitespace and executes the resulting URI scheme. This issue affects only callers that pass HTML-encoded strings directly to allowed_uri?; Loofah's default sanitize() path is not affected. This issue is fixed in version 2.25.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-184",
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73492.json"
}
References

Affected packages

Git / github.com/flavorjones/loofah

Affected ranges

Type
GIT
Repo
https://github.com/flavorjones/loofah
Events
Introduced
e65bdddfd3381f3a131be7e137d89bb3959c072b
Fixed
2706d7e858426ba856d9711b0e761b2fee7986c4
Fixed
f1be9d893b5a8dd79240441a912d8897e74c38c0
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "2.25.0"
                },
                {
                    "fixed": "2.25.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "f1be9d893b5a8dd79240441a912d8897e74c38c0"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v2.25.2",
            "range": [
                {
                    "fixed": "2706d7e858426ba856d9711b0e761b2fee7986c4"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v2.*
v2.25.0
v2.25.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73492.json"