TI-2026-76142 Aliases CVE-2026-111985 GHSA-q7gh-5v92-ww7h

stable-diffusion-webui safetensors header parsing allows unlimited allocation

MEDIUM 57CWE-400Published 2026-10-18 · Updated 2026-10-19

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

AUTOMATIC1111 stable-diffusion-webui up to 1.10.1 allocates resources without limits in read_metadata_from_safetensors in modules/sd_models.py, part of the Metadata Extraction component. A remote attacker can manipulate the header length field to trigger this, and the CVSS 4.0 base score is 5.3 (MEDIUM). A public exploit exists, and CISA's SSVC data rates exploitation as PoC and not automatable. The vulnerability is not in CISA KEV, and the project has not responded to an early issue report.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

A vulnerability was found in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. This impacts the function read_metadata_from_safetensors of the file modules/sd_models.py of the component Metadata Extraction. The manipulation of the argument header length field results in allocation of resources. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00425 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

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: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
AUTOMATIC1111	stable-diffusion-webui	1.10.0; 1.10.1	—	No fix listed	CNA

stable-diffusion-webui VendorAUTOMATIC1111 Affected 1.10.0; 1.10.1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:automatic1111:stable-diffusion-webui::::::::	—	—	AUTOMATIC1111

cpe:2.3:a:automatic1111:stable-diffusion-webui:*:*:*:*:*:*:*:* Versions — — ·AUTOMATIC1111

Remediation

No fixed version is listed for stable-diffusion-webui, and the project has not responded to the issue report. Restrict network access to the web UI until a fix is released.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-18 Threatist record created from CVE-2026-111985
2026-10-18 Alias added: GHSA-q7gh-5v92-ww7h
2026-10-20 CISA SSVC decision points changed
2026-10-20 Priority changed: LOW → MEDIUM

References

Exploit 1

https://github.com/user-attachments/files/32811560/poc.zip

Other 2

TI-2026-56753 Stable Diffusion WebUI Credential Disclosure via /sdapi/v1/cmd-flags CVSS 4.0HIGH 8.7
TI-2024-10233 Cross-Site WebSocket Hijacking (CSWSH) in automatic1111/stable-diffusion-webui CVSS 3.0CRITICAL 9.6
TI-2024-10136 Unauthenticated DoS via Multipart Boundary in automatic1111/stable-diffusion-webui CVSS 3.0HIGH 7.5
TI-2026-76141 Cross-site scripting in stable-diffusion-webui Card Builder CVSS 4.0MEDIUM 5.3
TI-2024-11481 Local File Inclusion in automatic1111/stable-diffusion-webui CVSS 3.0MEDIUM 6.5
TI-2024-11201 Denial of Service in automatic1111/stable-diffusion-webui CVSS 3.0MEDIUM 6.5

See all 11 →

Sources

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