Cross-Site Scripting Vulnerability in AUTOMATIC1111 Stable Diffusion Web UI
CVE-2026-111984

5.3MEDIUM

Key Information:

Vendor

Automatic1111

Status
Stable-diffusion-webui
Vendor
CVE Published:
18 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111984?

A cross-site scripting vulnerability exists in the Card Builder module of the AUTOMATIC1111 Stable Diffusion Web UI, specifically in the function create_item_html located in the file modules/ui_extra_networks.py. This issue arises from improper handling of the 'filename' argument, allowing attackers to inject malicious scripts. If exploited, this can lead to significant security risks, enabling remote attacks on users interacting with the affected interface. The vulnerability was reported to the developers, but as of now, no response has been noted regarding a fix.

Affected Version(s)

stable-diffusion-webui 1.10.0

stable-diffusion-webui 1.10.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-111984 - Proof of Concept

References

https://vuldb.com/vuln/421650
vdb-entrytechnical-description
https://vuldb.com/vuln/421650/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-111984
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

r1ck99 (VulDB User)
VulDB CNA Team
.