7.6

CVE-2026-35568: lfprojects mcp_java_sdk Origin Validation Error

CVSS: 7.6v4.0HighAnalyzed
AliasesCGA-4256-f97q-fp5wCGA-9856-p472-wxj8CGA-gxvv-9gq8-f5vf
Published 07-04-2026Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2026-35568 is a high (CVSS 7.6) Origin Validation Error vulnerability in lfprojects mcp_java_sdk. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.6/10
010
High · v4.0 (CVE.org)
EPSS score
0.20%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-QPPM-3F3R-JWW4

Timeline

  1. 07-04-2026
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to 1.0.0, the java-sdk contains a DNS rebinding vulnerability. This vulnerability allows an attacker to access a locally or network-private java-sdk MCP server via a victims browser that is either local, or network adjacent. This allows an attacker to make any tool call to the server as if they were a locally running MCP connected AI agent. This vulnerability is fixed in 1.0.0.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

+0.06 pp

From 0.14% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • nacos< 3.2.0-r6
  • nacos-docker< 3.2.0-r2
Io.modelcontextprotocol.sdk1 product
  • mcp-core< 1.0.0
Lfprojects1 product
Modelcontextprotocol1 product

4 vendors · 5 products

References

5 links