What’s Vulnerable › Vulnerabilities

CVE-2026-30968: Coral Server has insufficient validation of agent identity for SSE connections

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-06-17
• Weakness: CWE-862

Description

Coral Server is open collaboration infrastructure that enables communication, coordination, trust and payments for The Internet of Agents. Prior to 1.1.0, the SSE endpoint (/sse/v1/...) in Coral Server did not strongly validate that a connecting agent was a legitimate participant in the session. This could theoretically allow unauthorized message injection or observation. This vulnerability is fixed in 1.1.0.

Affected products

• Coral-Protocol coral-server: before 1.1.0 — fixed in 1.1.0

How to fix

Upgrade to a fixed version: Coral-Protocol coral-server 1.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/Coral-Protocol/coral-server/releases/tag/v1.1.0
• https://github.com/Coral-Protocol/coral-server/security/advisories/GHSA-2rj5-3pgm-xqw9

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