CVE-2026-49158

Apache Software Foundation · Apache Thrift

The Apache Thrift Ruby bindings are susceptible to a data amplification vulnerability due to improper handling of highly compressed data.

Executive summary

An unauthenticated attacker can exploit a data amplification vulnerability in Apache Thrift Ruby bindings to cause a denial of service through resource exhaustion.

Vulnerability

This vulnerability is classified as CWE-409, involving improper handling of highly compressed data. The flaw allows an unauthenticated remote attacker to trigger excessive resource consumption by sending specifically crafted compressed data, leading to a denial of service.

Business impact

The exploitation of this vulnerability can result in significant system downtime by exhausting available memory or CPU resources. Given the CVSS score of 7.5, this high severity issue poses a risk to service availability and operational continuity for applications relying on the affected Ruby bindings.

Remediation

Immediate Action: Update Apache Thrift Ruby bindings to version 0.24.0 or later to include the necessary security patches.

Proactive Monitoring: Monitor server resource utilization, including memory and CPU spikes, which may indicate attempted exploitation of this amplification vector.

Compensating Controls: If immediate patching is not feasible, implement request size limits or decompression limits at the network edge or application entry point to mitigate amplification effects.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

The high severity of this vulnerability necessitates immediate attention to prevent potential service disruptions. Organizations should prioritize updating their Apache Thrift environments to version 0.24.0, as this is the primary and most effective method to neutralize the risk of data amplification attacks.