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    CVE-2026-12228

    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.

    Published:Jul 18, 2026
    Last Modified:Aug 19, 2026
    EPS:Jul 18, 2026
    EPSS Score:0.00261
    CVSS Score:5.4

    Affected Products

    Vendor
    Lollms
    Product
    Lollms
    Vendor
    Parisneo
    Product
    Parisneo/lollms

    Exploits

    https://huntr.com/bounties/25623635-5ceb-4062-8289-02089e6d97c1https://huntr.com/bounties/25623635-5ceb-4062-8289-02089e6d97c1

    Related CVEs

    CVE-2026-1116 (CVSS 6.1) — A Cross-site Scripting (XSS) vulnerability was identified in the `from_dict` method of the `AppLollmsMessage` …
    CVE-2026-1115 (CVSS 9.6) — A Stored Cross-Site Scripting (XSS) vulnerability was identified in the social feature of parisneo/lollms, aff…
    CVE-2026-1114 (CVSS 9.8) — In parisneo/lollms version 2.1.0, the application's session management is vulnerable to improper access contro…
    CVE-2026-0558 (CVSS 9.8) — A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload …
    CVE-2026-0560 (CVSS 7.5) — A Server-Side Request Forgery (SSRF) vulnerability exists in parisneo/lollms versions prior to 2.2.0, specific…
    CVE-2026-0562 (CVSS 8.3) — A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to acc…
    CVE-2024-6985 (CVSS 4.4) — A path traversal vulnerability exists in the api open_personality_folder endpoint of parisneo/lollms-webui. Th…
    CVE-2024-4499 (CVSS 6.3) — A Cross-Site Request Forgery (CSRF) vulnerability exists in the XTTS server of parisneo/lollms version 9.6 due…
    CVE-2024-3121 (CVSS 3.3) — A remote code execution vulnerability exists in the create_conda_env function of the parisneo/lollms repositor…
    CVE-2024-3429 (CVSS 9.8) — A path traversal vulnerability exists in the parisneo/lollms application, specifically within the `sanitize_pa…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High