# CVE-2026-87293: Vulnerability in Oracle Java SE (component: RMI).


- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 20 Oct 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-gq49-g2hg-pr63, UBUNTU-CVE-2026-87293

## What is CVE-2026-87293?

CVE-2026-87293 is a medium-severity vulnerability in Oracle Java SE, published on 20 Oct 2026. 

### Official description

Vulnerability in Oracle Java SE (component: RMI).  Supported versions that are affected are Oracle Java SE: 8u503 and  8u503-perf; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  While the vulnerability is in Oracle Java SE, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-87293?


## How do I fix CVE-2026-87293?

No fix has been published for CVE-2026-87293 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-87293 being exploited?

There is no known exploitation of CVE-2026-87293 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-87293 and fix it if it is affected.

What it is: CVE-2026-87293 is a medium-severity vulnerability in Oracle Java SE, published on 20 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-87293 in the wild and no public exploit code.

Affected product: Oracle Java SE. 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-2026-87293/ (Markdown: https://insights.sbomify.com/CVE-2026-87293/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-87293
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-87293
- OSV: https://osv.dev/vulnerability/CVE-2026-87293

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-87293/
Summaries are generated and may contain mistakes; the official description above is the record.