CVE-2026-73428

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Source
https://cve.org/CVERecord?id=CVE-2026-73428
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73428.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73428
Aliases
Published
2026-08-13T22:04:19.121Z
Modified
2026-08-16T03:31:04.151948176Z
Severity
  • 4.6 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Trix: Stored XSS via HTMLParser attribute injection on paste
Details

Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.18, Trix is vulnerable to stored cross-site scripting when crafted HTML is pasted into the editor. HTMLParser processes a mock attachment in a <span> with an empty data-trix-attachment="{}" value, causing data-trix-attributes to be applied to a plain string piece. StringPiece.fromJSON accepts an unvalidated href, allowing a javascript: URI to enter the document model and serialized HTML and execute when another user renders and clicks the content. Applications that apply server-side HTML sanitization can neutralize the payload on save. This issue is fixed in version 2.1.18.

Database specific 
{
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73428.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/basecamp/trix

Affected ranges

Type
GIT
Repo
https://github.com/basecamp/trix
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9c0a993d9fc2ffe9d56b013b030bc238f9c0557c
Fixed
da8869922e19bc3f852091468d34029af80813e7
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.1.18"
        }
    ]
}

Affected versions

0.*
0.10.0
0.10.1
0.10.2
0.11.0
0.11.1
0.11.2
0.11.3
0.11.4
0.12.0
0.12.1
0.5.0
0.8.0
0.9.0
0.9.1
0.9.10
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
1.*
1.0.0
1.1.0
1.1.1
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.3.0
1.3.1
2.*
2.1.3
v2.*
v2.0.1
v2.0.10
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.10
v2.1.11
v2.1.12
v2.1.13
v2.1.14
v2.1.15
v2.1.16
v2.1.17
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73428.json"