Medium Injection exploit reference

CVE-2026-111986 — AUTOMATIC1111 stable-diffusion-webui Model Instantiation sd_models.py get_obj_from_str code injection

A vulnerability was determined in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. Affected is the function get_obj_from_str of the file modules/sd_models.py of the component Model Instantiation. This manipulation of the argument Target causes code injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Published Oct 18, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: VulDB

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.4% (30-day exploitation probability)+5
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.4%

ahead of 33% of scored CVEs · Oct 20, 2026

Affects

AUTOMATIC1111

Stable-diffusion-webui

CVSS base

6.3

Medium · 3 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (AUTOMATIC1111 Stable-diffusion-webui).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Exploitation requires user interaction: tighten email/web filtering and warn affected users.
Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
AUTOMATIC1111	Stable-diffusion-webui	version 1.10.0version 1.10.1	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
5.3	CVSS 4.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
2.1	CVSS 4.0	Low	—	—	cna@vuldb.com via NIST National Vulnerability Database
6.3	CVSS 3.1	Medium	2.8	3.4	cna@vuldb.com via NIST National Vulnerability Database
6.3	CVSS 3.1	Medium	—	—	GitHub, Inc. via GitHub Security Advisories
6.3	CVSS 3.1	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
6.3	CVSS 3.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
7.5	CVSS 2.0	High	10.0	6.4	cna@vuldb.com via NIST National Vulnerability Database
7.5	CVSS 2.0	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-74 · Injection

Other CVEs with this weakness →

EPSS over time FIRST

Oct 19, 2026 → Oct 20, 2026 · 2 reading(s) · max 0.40%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Look for parameters with command/query metacharacters and unexpected child processes of the service.

web/proxy/WAF logsnetwork IDS/IPSapplication logsendpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Source status changed · Received → Deferred
Oct 19, 2026 · NIST National Vulnerability Database
Affected products added · automatic1111/stable-diffusion-webui
Oct 18, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 18, 2026
CVSS changed · 6.3
Oct 18, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 18, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 18, 2026 · Alertas do Telegram
CVE published
Oct 18, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 18, 2026 – Oct 19, 2026
1× Official description updated · Oct 18, 2026 – Oct 18, 2026

References

10 on the record

github.com/advisories/GHSA-g6c9-c3gc-jcqg
GitHub Security Advisories
vuldb.com/submit/1006657
third-party-advisory, NIST National Vulnerability Database
github.com/AUTOMATIC1111/stable-diffusion-webui/
product, NIST National Vulnerability Database
vuldb.com/vuln/421652
vdb-entry, technical-description, NIST National Vulnerability Database
vuldb.com/vuln/421652/cti
signature, permissions-required, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-111986
GitHub Security Advisories
github.com/AUTOMATIC1111/stable-diffusion-webui/issues/17499
issue-tracking, NIST National Vulnerability Database
github.com/AUTOMATIC1111/stable-diffusion-webui
GitHub Security Advisories
github.com/user-attachments/files/32834193/a1111-yaml-target-poc.zip
exploit, NIST National Vulnerability Database
vuldb.com/cve/CVE-2026-111986
third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

AUTOMATIC1111
every CVE for this vendor

Injection
same class

CWE-74
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-111987 AUTOMATIC1111 stable-diffusion-webui Extra-Networks Card Builder sd_models.py read_metadata_from_safetensors cross site scripting 3d
Medium CVE-2026-111985 AUTOMATIC1111 stable-diffusion-webui Metadata Extraction sd_models.py read_metadata_from_safetensors allocation of resources 3d
Medium CVE-2026-111984 AUTOMATIC1111 stable-diffusion-webui Card Builder ui_extra_networks.py create_item_html cross site scripting 3d
High CVE-2026-82288 Stable Diffusion WebUI Credential Disclosure via /sdapi/v1/cmd-flags Aug 28, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-111986 is "AUTOMATIC1111 stable-diffusion-webui Model Instantiation sd_models.py get_obj_from_str code injection", rated Medium. It affects Stable-diffusion-webui (AUTOMATIC1111); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.3 describes technical severity. EPSS 0.40% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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