SB2026072459 - Insufficient verification of data authenticity in hono

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Main Vulnerability Database SB2026072459

SB2026072459 - Insufficient verification of data authenticity in hono

Published: July 24, 2026

Security Bulletin ID SB2026072459
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Insufficient verification of data authenticity (CVE-ID: CVE-2026-27700)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass IP-based access restrictions.

The vulnerability exists due to insufficient verification of data authenticity in the getConnInfo() function of the AWS Lambda adapter when processing the X-Forwarded-For header behind an Application Load Balancer. A remote attacker can supply a crafted X-Forwarded-For header to bypass IP-based access restrictions.

Only deployments using the AWS Lambda adapter behind an Application Load Balancer and relying on getConnInfo() for IP-based authorization decisions are affected.


Remediation

Install update from vendor's website.

References