# CVE-2021-26758: Privilege escalation in n/a

> Attackers can gain root terminal access and execute commands on the host system via a privilege escalation vulnerability in OpenLiteSpeed.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9f37-v7ww-2cmh

## What is CVE-2021-26758?

CVE-2021-26758 is a high-severity vulnerability in n/a, published on 7 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2021-26758?

It affects 1 product.


Products: Litespeedtech Openlitespeed.

## How do I fix CVE-2021-26758?

No fix has been published for CVE-2021-26758 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-26758 being exploited?

There is no known exploitation of CVE-2021-26758 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-5519](https://insights.sbomify.com/CVE-2020-5519/): Path traversal in n/a (critical 9.8)
- [CVE-2022-0073](https://insights.sbomify.com/CVE-2022-0073/): Authenticated Remote Code Execution in OpenLiteSpeed Web Server (high 8.8)
- [CVE-2022-0074](https://insights.sbomify.com/CVE-2022-0074/): Privilege Escalation in OpenLiteSpeed Web Server (high 8.8)
- [CVE-2023-40518](https://insights.sbomify.com/CVE-2023-40518/): Other in n/a (high 7.5)
- [CVE-2015-3890](https://insights.sbomify.com/CVE-2015-3890/): Use after free in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-26758 and fix it if it is affected.

What it is: CVE-2021-26758 is a high-severity vulnerability in n/a, published on 7 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-26758 in the wild and no public exploit code.

Affected product: n/a. 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-2021-26758/ (Markdown: https://insights.sbomify.com/CVE-2021-26758/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-26758
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-26758
- OSV: https://osv.dev/vulnerability/CVE-2021-26758

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-26758/
Summaries are generated and may contain mistakes; the official description above is the record.