How broadly exploitable is this vulnerability?

Exploitation is limited to users who can be convinced to click crafted links while authenticated (or willing to log in) to LangSmith Studio. It is not a wormable or fully unauthenticated remote exploit, but effective phishing can lead to repeated compromises.

What level of access does an attacker gain with a stolen token?

An attacker can act as the victim for as long as the token remains valid, accessing or modifying any LangSmith resources and actions permitted to that user within their workspace. The scope is essentially the same as the victim's own LangSmith permissions, but does not automatically grant broader system or cluster control.

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

The safest pattern is to ensure all parameters that can affect URLs or origins (such as `baseUrl`) are validated against a strict server-side allow-list, and to never let raw user input dictate where authentication-bearing requests or redirects are sent. Authentication flows should only interact with origins defined and enforced by the backend.

Severity:

HIGH RISK

(8.1)

URL Parameter Injection (CWE-74) in LangSmith Studio Token Handling

CVE-2026-25750

Published:

Mar 4, 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

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May 6, 2026

Vulnerability Type

Category:

Injection / URL Parameter Manipulation

CWE:

CWE-74

Impact:

Account Takeover / Authentication Token Theft

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Injection / URL Parameter Manipulation

CWE:

CWE-74

Impact:

Account Takeover / Authentication Token Theft

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

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URL Parameter Injection (CWE-74) in LangSmith Studio Token Handling

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

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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