SB20260825118 - Akamai App & API Protector Hybrid update for Envoy

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Main Vulnerability Database SB20260825118

SB20260825118 - Akamai App & API Protector Hybrid update for Envoy

Published: August 25, 2026

Security Bulletin ID SB20260825118
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Asymmetric Resource Consumption (Amplification) (CVE-ID: CVE-2026-47774)

CWE-ID: CWE-405 - Asymmetric Resource Consumption (Amplification)

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to asymmetric resource consumption in HTTP/2 downstream request processing when handling specially crafted cookie headers with HPACK decoded-size amplification. A remote attacker can send specially crafted HTTP/2 requests to cause a denial of service.

Flow-control stalling can prolong stream lifetime and delay reclamation of per-stream memory, increasing the effectiveness of the attack.


Remediation

Install update from vendor's website.

References