Is this vulnerability remotely exploitable over the internet?

Yes, if the text-generation-webui instance is exposed (directly or via a proxy) and an attacker can supply URLs to the RAG extensions. The attacker does not need direct network access to internal resources; they only need to reach the web UI and influence the URL parameter.

What level of access does an attacker need to exploit this?

The attacker must be able to trigger a RAG workflow that accepts a URL and have that URL passed to the backend. This might be anonymous or authenticated depending on how the deployment protects the UI or API, but no shell or direct network login to the host is required.

What is the safest general fix pattern for this type of issue?

Constrain server-side HTTP requests to a tightly controlled set of destinations using allowlists, reject internal and link-local address ranges, validate schemes, and enforce egress restrictions at the network layer. Avoid using generic "fetch any URL" functionality in privileged or broadly connected backend services.

Severity:

HIGH RISK

(7.5)

Server-Side Request Forgery (CWE-918) in text-generation-webui RAG Extensions

CVE-2026-35486

Published:

Apr 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Exposure of Internal Services and Cloud Metadata via SSRF

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Exposure of Internal Services and Cloud Metadata via SSRF

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Server-Side Request Forgery (CWE-918) in text-generation-webui RAG Extensions

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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