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TI-2026-10519 Aliases CVE-2026-12228GHSA-vh8r-6pw6-wv4f

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

Priority MEDIUM 60CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00334 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
parisneoparisneo/lollmsup to latest—No fix listedCNA
  • parisneo/lollms Vendorparisneo Affected up to latest Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:lollms:lollms:*:*:*:*:*:*:*:*up to 2.1.0VulnerableLollms
  • cpe:2.3:a:lollms:lollms:*:*:*:*:*:*:*:* Versions up to 2.1.0 Vulnerable ·Lollms

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-12228
  2. 2026-10-03 Alias added: GHSA-vh8r-6pw6-wv4f

References

Exploit 1

  • TI-2026-00842 Improper Access Control via Weak JWT Token in parisneo/lollms CVSS 3.0CRITICAL 9.8
  • TI-2024-05059 Remote Code Execution via Path Traversal in parisneo/lollms CVSS 3.0CRITICAL 9.8
  • TI-2024-04029 Remote Code Execution via `/apply_settings` and `/execute_code` in parisneo/lollms-webui CVSS 3.0CRITICAL 9.8
  • TI-2024-04023 Remote Code Execution due to LFI in '/install_extension' in parisneo/lollms-webui CVSS 3.1CRITICAL 9.8
  • TI-2024-03798 Arbitrary Code Execution in parisneo/lollms CVSS 3.0CRITICAL 9.8
  • TI-2024-02196 Arbitrary Upload & Read via Path Traversal in parisneo/lollms-webui CVSS 3.0CRITICAL 9.6
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences