CVE-2026-12228

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Source

https://cve.org/CVERecord?id=CVE-2026-12228

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12228.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-12228

Published

2026-07-18T20:36:36Z

Modified

2026-08-21T03:46:31Z

Severity

8.7 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N CVSS Calculator

Summary

Stored XSS in Direct Messages via Prompt Sharing in parisneo/lollms

Details

A stored cross-site scripting (XSS) vulnerability exists in the POST /api/prompts/share endpoint of parisneo/lollms (latest version). The endpoint stores attacker-controlled prompt_content into DBDirectMessage.content without server-side sanitization. When a victim opens the direct message (DM) thread, the message is rendered by the DM UI through MessageContentRenderer, which uses v-html to insert rendered HTML into the DOM. The frontend sanitizer, which is regex-based, fails to comprehensively sanitize attacker-controlled HTML, allowing malicious payloads to execute in the victim's browser context. This vulnerability enables any authenticated user to send a malicious prompt-share message to another user's inbox, leading to arbitrary JavaScript execution, authenticated actions as the victim, exposure of same-origin application data, and potential account takeover.

Database specific

{
    "cna_assigner": "@huntr_ai",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12228.json"
}

References

Affected packages

Git / github.com/parisneo/lollms

Affected ranges

Type

GIT

Repo

https://github.com/parisneo/lollms

Events

Introduced

Last Affected

a9b21a0c417f8a67bc221c699cfae8c75068ed90

Database specific

Show details

{
    "cpe": "cpe:2.3:a:lollms:lollms:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.1.0"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v1.*

v1.0.0

v1.0.1

v2.*

v2.0.0

v2.1.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12228.json"