CVE-2026-104847

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Source

https://cve.org/CVERecord?id=CVE-2026-104847

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104847.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-104847

Aliases

GHSA-c8x8-7fp4-3x9w

Downstream

CGA (46)

Published

2026-10-02T16:02:42Z

Modified

2026-10-04T02:46:00Z

Severity

8.5 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

ProseMirror: XSS vulnerability in prosemirror-view's paste handling

Details

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. When a user pastes the crafted HTML into an editor, the unvalidated context attributes can construct content that executes attacker-controlled JavaScript in the browser window containing the editor. This issue is fixed in version 1.42.3.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104847.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "1.42.3"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/prosemirror/prosemirror-view

Affected ranges

Type

GIT

Repo

https://github.com/prosemirror/prosemirror-view

Events

Introduced

Fixed

20dc0a911a79f8fc6640dbbea5e7d68d3c4784b7

Fixed

2e91a612bbc1248e55b4f6061fc93fe459f977c1

Database specific

Show details

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104847.json"