Is this vulnerability remotely exploitable over the internet?

Yes, but only by authenticated users who can access the asset download functionality. Exploitation occurs remotely, but the attacker leverages the server's own network position to reach internal resources.

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

The attacker needs an authenticated SillyTavern account with permission to trigger asset downloads. No additional system-level privileges are required beyond that application access.

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

The most robust pattern is to strictly constrain all user-supplied URLs via an allowlist of trusted domains, combined with defensive checks that block private networks, loopback addresses, and metadata services, and to avoid returning arbitrary response bodies directly to users.

Severity:

HIGH RISK

(8.5)

Server-Side Request Forgery (CWE-918) in SillyTavern Asset Download Endpoint

CVE-2026-26286

Published:

Feb 19, 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

HIGH RISK

HIGH

(7.3)

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

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

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

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal services and sensitive network resources via server-initiated HTTP requests

Severity:

HIGH RISK

(8.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal services and sensitive network resources via server-initiated HTTP requests

Severity:

HIGH RISK

(8.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Server-Side Request Forgery (CWE-918) in SillyTavern Asset Download Endpoint

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

HIGH RISK

HIGH

(7.3)

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

HIGH RISK

HIGH

(7.3)

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

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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