Is this vulnerability remotely exploitable?

Yes. If an attacker can influence redirect responses (for example, by controlling an upstream endpoint, acting as a man-in-the-middle, or compromising an intermediate service), they can cause the client to send its headers—including sensitive information—to an attacker-controlled host.

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

The attacker needs control over or influence on the redirect target or the redirect-generating response. This typically requires control of a server in the call path, a compromised or malicious service returning redirects, DNS or routing manipulation, or a network position that allows injection or alteration of HTTP responses.

What is the safest general fix pattern?

The safest pattern is to implement strict redirect handling: limit automatic redirects to trusted or same-origin hosts, and ensure that only a minimal set of non-sensitive headers are forwarded on redirects. Sensitive authentication and patient-related headers should be treated as origin-bound and stripped or regenerated when crossing host boundaries.

Severity:

HIGH RISK

(7.5)

Sensitive Information Exposure via Redirected HTTP Headers (CWE-200) in HAPI FHIR Client

CVE-2026-33180

Published:

Mar 20, 2026

Status:

Deferred

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:

Information Exposure

CWE:

CWE-200

Impact:

Sensitive Information Disclosure and Potential Request Impersonation

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Information Exposure

CWE:

CWE-200

Impact:

Sensitive Information Disclosure and Potential Request Impersonation

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Sensitive Information Exposure via Redirected HTTP Headers (CWE-200) in HAPI FHIR Client

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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