# CVE-2026-14621: FederatedAI FATE OSX Broker QueuePushReqStreamObserver.java QueuePushReqStreamObserver.initEggroll wrong session

> Remote attackers can expose data to wrong sessions via improper session handling in the OSX Broker component of FederatedAI FATE.

- **Severity:** Low 2.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 4 Jul 2026
- **Updated:** 6 Jul 2026
- **Also known as:** GHSA-pqmh-9h5r-56pf

## What is CVE-2026-14621?

CVE-2026-14621 is a low-severity vulnerability in FederatedAI FATE, published on 4 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been found in FederatedAI FATE up to 2.2.0. This affects the function QueuePushReqStreamObserver.initEggroll of the file java/osx/osx-broker/src/main/java/org/fedai/osx/broker/grpc/QueuePushReqStreamObserver.java of the component OSX Broker. Such manipulation of the argument rollSiteSessionId/dstRole/dstPartyId leads to exposure of data element to wrong session. The attack can be executed remotely. A high complexity level is associated with this attack. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.

Weakness: CWE-488 (Exposure of Data Element to Wrong Session)

## Which versions are affected by CVE-2026-14621?


## How do I fix CVE-2026-14621?

No fix has been published for CVE-2026-14621 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14621 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14621 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14621 and fix it if it is affected.

What it is: CVE-2026-14621 is a low-severity vulnerability in FederatedAI FATE, published on 4 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14621 exists.

Affected product: FederatedAI FATE. 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-2026-14621/ (Markdown: https://insights.sbomify.com/CVE-2026-14621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14621
- OSV: https://osv.dev/vulnerability/CVE-2026-14621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14621/
Summaries are generated and may contain mistakes; the official description above is the record.