# CVE-2021-26293: Path traversal in n/a

> Attackers can exploit a directory traversal flaw in AfterLogic Aurora and WebMail Pro when DAV is enabled to create executable files on the server.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-77v9-4x76-g7mj

## What is CVE-2021-26293?

CVE-2021-26293 is a critical path traversal vulnerability in n/a, published on 4 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in AfterLogic Aurora through 8.5.3 and WebMail Pro through 8.5.3, when DAV is enabled. They allow directory traversal to create new files (such as an executable file under the web root). This is related to DAVServer.php in 8.x and DAV/Server.php in 7.x.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-26293?

It affects 2 products.


Products: Afterlogic Aurora, Afterlogic Webmail Pro.

## How do I fix CVE-2021-26293?

No fix has been published for CVE-2021-26293 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-26293 being exploited?

There is no known exploitation of CVE-2021-26293 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-26294](https://insights.sbomify.com/CVE-2021-26294/): Path traversal in n/a (high 7.5)
- [CVE-2019-19129](https://insights.sbomify.com/CVE-2019-19129/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2019-16238](https://insights.sbomify.com/CVE-2019-16238/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2017-14597](https://insights.sbomify.com/CVE-2017-14597/): Cross-site scripting in n/a (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-26293 and fix it if it is affected.

What it is: CVE-2021-26293 is a critical path traversal vulnerability in n/a, published on 4 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-26293 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-2021-26293/ (Markdown: https://insights.sbomify.com/CVE-2021-26293/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-26293
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-26293
- OSV: https://osv.dev/vulnerability/CVE-2021-26293

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-26293/
Summaries are generated and may contain mistakes; the official description above is the record.