How broadly exploitable is this vulnerability?

The vulnerability is broadly exploitable on any affected Sub2API deployment where the password reset endpoint is publicly reachable and the application trusts incoming Host/Forwarded headers. An attacker only needs the ability to send crafted HTTP requests and cause password reset emails to be sent to potential victims.

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

The attacker must be able to interact with the public-facing password reset functionality and control request headers, which is usually possible through custom HTTP clients or proxies. They also need to target users who will receive and click the poisoned password reset link, making phishing or social engineering a common component of exploitation.

What is the safest general fix pattern for this issue?

The safest pattern is to decouple password reset URL generation from all client-controlled data: define a canonical application base URL in configuration and always use that when composing reset links. Optionally, enforce an allowlist of acceptable hosts and reject any mismatch, and ensure tokens embedded in these links are short-lived and single-use.

Severity:

CRITICAL RISK

(9.1)

Password Reset Poisoning via Untrusted Host Headers (CWE-116) in Sub2API

CVE-2026-27812

Published:

Feb 25, 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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CRITICAL RISK

CRITICAL

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Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Password Reset Poisoning / Header Trust Vulnerability

CWE:

CWE-116

Impact:

Account Takeover via Manipulated Password Reset Links

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Password Reset Poisoning / Header Trust Vulnerability

CWE:

CWE-116

Impact:

Account Takeover via Manipulated Password Reset Links

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Password Reset Poisoning via Untrusted Host Headers (CWE-116) in Sub2API

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

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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