# CVE-2020-26191: Privilege escalation in PowerScale OneFS

> A user with job engine privileges can escalate to highest RBAC level, allowing arbitrary data access, system tampering, or service denial.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Feb 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-qjvv-qc9h-394h

## What is CVE-2020-26191?

CVE-2020-26191 is a high-severity vulnerability in Dell Emc Powerscale Onefs, published on 9 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell EMC PowerScale OneFS versions 8.1.0 - 9.1.0 contain a privilege escalation vulnerability. A user with ISI_PRIV_JOB_ENGINE may use the PermissionRepair job to grant themselves the highest level of RBAC privileges thus being able to read arbitrary data, tamper with system software or deny service to users.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2020-26191?

It affects 1 product.


Products: Dell Emc Powerscale Onefs.

## How do I fix CVE-2020-26191?

No fix has been published for CVE-2020-26191 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-26191 being exploited?

There is no known exploitation of CVE-2020-26191 in the wild and no public exploit code.

## Other vulnerabilities in Dell Emc Powerscale Onefs

- [CVE-2021-21502](https://insights.sbomify.com/CVE-2021-21502/): Auth bypass in PowerScale OneFS (critical 9.8)
- [CVE-2022-26851](https://insights.sbomify.com/CVE-2022-26851/): Information disclosure in PowerScale OneFS (critical 9.1)
- [CVE-2021-21506](https://insights.sbomify.com/CVE-2021-21506/): Privilege escalation in PowerScale OneFS (high 8.8)
- [CVE-2023-22575](https://insights.sbomify.com/CVE-2023-22575/): Information disclosure in PowerScale OneFS (high 8.7)
- [CVE-2021-21594](https://insights.sbomify.com/CVE-2021-21594/): Information disclosure in PowerScale OneFS (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26191 and fix it if it is affected.

What it is: CVE-2020-26191 is a high-severity vulnerability in Dell Emc Powerscale Onefs, published on 9 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-26191 in the wild and no public exploit code.

Affected product: Dell Emc Powerscale Onefs. 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-2020-26191/ (Markdown: https://insights.sbomify.com/CVE-2020-26191/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26191
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26191
- OSV: https://osv.dev/vulnerability/CVE-2020-26191

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-26191/
Summaries are generated and may contain mistakes; the official description above is the record.