Coral Server has insufficient validation of agent identity for SSE connections
Priority LOW 39CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Fixed coral-server (Coral-Protocol): 1.1.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Coral-Protocol | coral-server | before 1.1.0 | 1.1.0 | Patch available | CNA |
- coral-server VendorCoral-Protocol Affected before 1.1.0 Fixed in 1.1.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:coralos:coral_server:*:*:*:*:*:*:*:* | before 1.1.0 | Vulnerable | Coral-Protocol |
- cpe:2.3:a:coralos:coral_server:*:*:*:*:*:*:*:* Versions before 1.1.0 Vulnerable ·Coral-Protocol
Remediation
- Fix · CNA coral-server (Coral-Protocol) Fixed in 1.1.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-30968
- 2026-10-25 Priority changed: MEDIUM → LOW
References
More Coral-Protocol Coral Server vulnerabilities
- TI-2026-23795 Session authentication bypass in Coral Server session creation endpoint CVSS 4.0HIGH 8.8
- TI-2026-23794 Coral Server has insufficient agent authentication in session communication channels CVSS 4.0HIGH 7.6
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences