RCE in Automatic1111 Stable-Diffusion-Webui
CVE-2026-111984
A vulnerability has been found in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. This affects the function create_item_html of the file modules/ui_extra_networks.py of the component Card Builder. The manipulation of the argument filename leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Automatic1111 Stable-Diffusion-Webui — versions 1.10.0, 1.10.1
Weakness classification (CWE)
References
- vuldb.com/vuln/421650 (technical-description, vdb-entry)
- vuldb.com/vuln/421650/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-111984 (third-party-advisory)
- vuldb.com/submit/1005460 (third-party-advisory)
- github.com/AUTOMATIC1111/stable-diffusion-webui/issues/17497 (issue-tracking)
- github.com/user-attachments/files/32810554/poc.zip (exploit)
- github.com/AUTOMATIC1111/stable-diffusion-webui/ (product)
Frequently asked questions
- What is CVE-2026-111984?
- CVE-2026-111984 is a medium-severity vulnerability in Automatic1111 Stable-Diffusion-Webui, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-10-18.
- How severe is CVE-2026-111984?
- Medium severity. CVSS v3 base score is 4.3 out of 10.