# CVE-2019-10266: XML external entity in n/a

> Unauthenticated attackers can read file structures and contents via XML External Entity injection in Ahsay Cloud Backup Suite.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-f5xg-c8rx-g728

## What is CVE-2019-10266?

CVE-2019-10266 is a high-severity vulnerability in n/a, published on 26 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. When sending an out-of-bounds XML document to a URL, it is possible to read the file structure and even the content of files without authentication.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2019-10266?

It affects 1 product.


Products: Ahsay Cloud Backup Suite.

## How do I fix CVE-2019-10266?

No fix has been published for CVE-2019-10266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-10266 being exploited?

There is no known exploitation of CVE-2019-10266 in the wild and no public exploit code.

Public exploit code:

- Ahsay Backup 7.x - 8.1.1.50 - XML External Entity Injection (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2026-105134](https://insights.sbomify.com/CVE-2026-105134/): Ahsay AhsayCBS Command Injection (critical 10.0, exploited in the wild)
- [CVE-2026-105133](https://insights.sbomify.com/CVE-2026-105133/): Ahsay AhsayCBS Improper Authentication (medium 6.9, exploited in the wild)
- [CVE-2020-5846](https://insights.sbomify.com/CVE-2020-5846/): File upload in n/a (high 8.8)
- [CVE-2019-10267](https://insights.sbomify.com/CVE-2019-10267/): File upload in n/a (high 8.8)
- [CVE-2019-10265](https://insights.sbomify.com/CVE-2019-10265/): Path traversal in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10266 and fix it if it is affected.

What it is: CVE-2019-10266 is a high-severity vulnerability in n/a, published on 26 Jul 2019. 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-2019-10266 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-2019-10266/ (Markdown: https://insights.sbomify.com/CVE-2019-10266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10266
- OSV: https://osv.dev/vulnerability/CVE-2019-10266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10266/
Summaries are generated and may contain mistakes; the official description above is the record.