Cross-client credential exposure via shared subprocess
Published Sep 4, 2026 · Updated Sep 4, 2026
Session data exposure in IBM ContextForge Gateway Translate Utility 1.0.8 and earlier allows remote attackers to access other clients' credentials. The /message handler accepts a session identifier but does not use it for routing, while all clients share one stdio subprocess whose environment can be replaced by concurrent mapped headers. Exploitation requires dynamic environment injection in a multi-client deployment and allows requests to run with another user's token, enabling unauthorized data access or actions.
Summary
What happened
Session data exposure in IBM ContextForge Gateway Translate Utility 1.0.8 and earlier allows remote attackers to access other clients' credentials. The /message handler accepts a session identifier but does not use it for routing, while all clients share one stdio subprocess whose environment can be replaced by concurrent mapped headers. Exploitation requires dynamic environment injection in a multi-client deployment and allows requests to run with another user's token, enabling unauthorized data access or actions.
The record
- CVE
- CVE-2026-18489
- Published
- Sep 4, 2026
- Updated
- Sep 4, 2026
- Vendor
- IBM
- Product
- ContextForge MCP Gateway Translate Utility
- Classifications
- CWE-488, CAPEC-60, CAPEC-59
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 4, 2026CVE publishedPublication date reported by the CVE source.
- Sep 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=<= 1.0.8
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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