# CVE-2026-12228 — parisneo parisneo/lollms

> As of 2026-07-18, CVE-2026-12228 is a HIGH-severity vulnerability in parisneo parisneo/lollms, CVSS v3.1 8.7, EPSS 0.2% (17.5th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-12228 as of 2026-07-18; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-18

## What is 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.

The record classifies CVE-2026-12228 under weakness class [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs a user to take an action first, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 79 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.7 — HIGH (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 17.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-18

## Is CVE-2026-12228 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **parisneo**: parisneo/lollms

## How to fix CVE-2026-12228

No vendor patch reference has been recorded for CVE-2026-12228 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-12228

No threat campaign in the Threadlinqs corpus currently references CVE-2026-12228, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-20. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [huntr.com](https://huntr.com/bounties/25623635-5ceb-4062-8289-02089e6d97c1)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-12228
Full detection coverage and IOCs for threats exploiting CVE-2026-12228 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp