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

> Attackers can inject or observe messages in Coral Server sessions due to insufficient agent identity validation on SSE endpoints.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Mar 2026
- **Updated:** 10 Mar 2026
- **Also known as:** GHSA-2rj5-3pgm-xqw9

## What is CVE-2026-30968?

CVE-2026-30968 is a high-severity missing authorization vulnerability in Coral-Protocol coral-server, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-30968?

It affects 1 product.


Products: Coralos Coral Server.

## How do I fix CVE-2026-30968?

No fix has been published for CVE-2026-30968 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30968 being exploited?

There is no known exploitation of CVE-2026-30968 in the wild and no public exploit code.

## Other vulnerabilities in Coral-Protocol coral-server

- [CVE-2026-30970](https://insights.sbomify.com/CVE-2026-30970/): Session authentication bypass in Coral Server session creation endpoint (high 8.8)
- [CVE-2026-30969](https://insights.sbomify.com/CVE-2026-30969/): Coral Server has insufficient agent authentication in session communication channels (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30968 and fix it if it is affected.

What it is: CVE-2026-30968 is a high-severity missing authorization vulnerability in Coral-Protocol coral-server, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-30968 in the wild and no public exploit code.

Affected product: Coral-Protocol coral-server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-30968/ (Markdown: https://insights.sbomify.com/CVE-2026-30968/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30968
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30968
- OSV: https://osv.dev/vulnerability/CVE-2026-30968

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30968/
Summaries are generated and may contain mistakes; the official description above is the record.