CVE-2026-30968
Insufficient Validation in Coral Server SSE Allows Unauthorized Access
Publication date: 2026-03-10
Last updated on: 2026-03-13
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| coralos | coral_server | to 1.1.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': "CVE-2026-30968 is a vulnerability in the Coral Server's Server-Sent Events (SSE) endpoint (/sse/v1/...) present in versions 1.0 and earlier. The SSE endpoint did not strongly validate whether a connecting agent was a legitimate participant in the session. This insufficient validation could allow unauthorized agents to inject messages into the session or observe session messages without permission."}, {'type': 'paragraph', 'content': 'The vulnerability was fixed in version 1.1.0 by requiring a valid agent secret tied to the session for SSE channel connections, enforcing strong validation of agent identity.'}] [2]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing unauthorized agents to inject messages into a Coral Server session or observe messages within the session without authorization. This could lead to unauthorized data exposure or manipulation of session communications.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade Coral Server to version 1.1.0 or later, where the SSE endpoint enforces strong validation of agent identity by requiring a valid agent secret tied to the session.
This update fixes the insufficient validation issue that allowed unauthorized message injection or observation by ensuring only legitimate participants can connect to the SSE endpoint.