SEPTEMBER 19, 2026
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Case File

CVE-2026-59279

HIGH · CVSS 7.5 EPSS 0.39%

Source: NVD + CISA KEV + EPSS · Published 2026-08-21 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The MCP Streamable HTTP server transport in the Spring AI framework is vulnerable due to its lack of session retention limits and absence of client authentication by default. This allows remote attackers to exploit the vulnerability by creating an unbounded number of sessions, leading to memory exhaustion and Denial of Service for legitimate users. Organizations utilizing Spring AI version 2.0.0 should prioritize patching this vulnerability to mitigate potential service disruptions.

CVE
CVE-2026-59279
Severity
HIGH
CVSS
7.5
EPSS
0.39%

Original NVD Description

The MCP Streamable HTTP server transport (WebFlux and WebMvc variants) does not place any limit on the number of sessions it retains, and by default does not require clients to be authenticated. As a result, a remote attacker can cause the server to accumulate an unbounded number of sessions over time, gradually exhausting available memory and ultimately causing a Denial of Service that affects all legitimate clients. Affected versions: Spring AI: 2.0.0

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