Service interruption via SSE parser resource exhaustion
Published Sep 16, 2026 · Updated Sep 16, 2026
Uncontrolled resource consumption in AG-UI 1.0's SSE JSON parser allows remote attackers to interrupt consuming applications. The published record identifies src/stream/sse_parser.cpp but does not disclose which parser operation or input shape drives the excessive consumption. Reachability requires an application to feed attacker-controlled SSE data to the C++ parser, and the documented consequence is resource exhaustion rather than data access or code execution.
Summary
What happened
Uncontrolled resource consumption in AG-UI 1.0's SSE JSON parser allows remote attackers to interrupt consuming applications. The published record identifies src/stream/sse_parser.cpp but does not disclose which parser operation or input shape drives the excessive consumption. Reachability requires an application to feed attacker-controlled SSE data to the C++ parser, and the documented consequence is resource exhaustion rather than data access or code execution.
The record
- CVE
- CVE-2026-92363
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- AG-UI Protocol
- Product
- AG-UI
- Classifications
- T1499.003
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 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?
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- Affected versionversion=1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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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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