Is this vulnerability remotely exploitable over the internet?

Yes, but only by authenticated clients who can reach the Chainlit API and submit Element updates. Those clients can then cause the server to issue HTTP requests to internal or restricted endpoints that might not be directly reachable from the internet.

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

The attacker must be able to authenticate to the Chainlit instance and create or modify Elements that include a `url` property. No direct access to internal services is required, since the server acts as the requester.

What is the safest general fix pattern?

The most robust fix is to avoid using arbitrary user-supplied URLs for server-side fetches. Where such functionality is required, enforce strict allowlists of permitted hosts or services, implement thorough validation and address filtering, and block access to internal and metadata endpoints, combined with network egress controls.

Severity:

HIGH RISK

(7.7)

Server-Side Request Forgery (CWE-918) in Chainlit SQLAlchemy Element Backend

CVE-2026-22219

Published:

Jan 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 network resources and sensitive metadata via server-initiated HTTP requests

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

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

Severity:

HIGH RISK

(7.7)

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 Chainlit SQLAlchemy Element Backend

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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