# CVE-2020-36252: Information disclosure in n/a

> An attacker with one outgoing share can access any version of any file in ownCloud Server by guessing predictable IDs.

- **Severity:** Medium 6.8 (`CVSS:3.1/AC:L/AV:A/A:N/C:H/I:N/PR:L/S:C/UI:N`)
- **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:** 19 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-gc7p-gg9x-38qq

## What is CVE-2020-36252?

CVE-2020-36252 is a medium-severity vulnerability in Owncloud Owncloud Server, published on 19 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

ownCloud Server 10.x before 10.3.1 allows an attacker, who has one outgoing share from a victim, to access any version of any file by sending a request for a predictable ID number.

Weakness: CWE-330 (Use of Insufficiently Random Values)

## Which versions are affected by CVE-2020-36252?

It affects 1 product.


Products: Owncloud Owncloud Server.

## How do I fix CVE-2020-36252?

No fix has been published for CVE-2020-36252 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36252 being exploited?

There is no known exploitation of CVE-2020-36252 in the wild and no public exploit code.

## Other vulnerabilities in Owncloud Owncloud Server

- [CVE-2023-49105](https://insights.sbomify.com/CVE-2023-49105/): ownCloud Improper Authentication (critical 9.8, exploited in the wild)
- [CVE-2015-7699](https://insights.sbomify.com/CVE-2015-7699/): Code injection in n/a (critical 9.0)
- [CVE-2015-6500](https://insights.sbomify.com/CVE-2015-6500/): Path traversal in n/a (high 7.5)
- [CVE-2014-2051](https://insights.sbomify.com/CVE-2014-2051/): Code injection in n/a (high 7.5)
- [CVE-2014-2054](https://insights.sbomify.com/CVE-2014-2054/): PHPExcel vulnerable to XXE attacks through libxml (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36252 and fix it if it is affected.

What it is: CVE-2020-36252 is a medium-severity vulnerability in Owncloud Owncloud Server, published on 19 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-2020-36252 in the wild and no public exploit code.

Affected product: Owncloud Owncloud Server. 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-2020-36252/ (Markdown: https://insights.sbomify.com/CVE-2020-36252/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36252
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36252
- OSV: https://osv.dev/vulnerability/CVE-2020-36252

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-36252/
Summaries are generated and may contain mistakes; the official description above is the record.