# CVE-2020-9912: Security feature bypass in Safari

> An attacker can bypass origin restrictions in Safari Reader mode to alter the origin of a download frame, requiring the use of Reader mode.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A: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:** 16 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qcmx-2mgh-jp57

## What is CVE-2020-9912?

CVE-2020-9912 is a low-severity vulnerability in Apple Safari, published on 16 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A logic issue was addressed with improved restrictions. This issue is fixed in Safari 13.1.2. A malicious attacker may be able to change the origin of a frame for a download in Safari Reader mode.

## Which versions are affected by CVE-2020-9912?

It affects 1 product.


Products: Apple Safari.

## How do I fix CVE-2020-9912?

No fix has been published for CVE-2020-9912 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9912 being exploited?

There is no known exploitation of CVE-2020-9912 in the wild and no public exploit code.

## Other vulnerabilities in Apple Safari

- [CVE-2015-5780](https://insights.sbomify.com/CVE-2015-5780/): Security feature bypass in n/a (critical 10.0)
- [CVE-2014-1300](https://insights.sbomify.com/CVE-2014-1300/): Code injection in n/a (critical 10.0)
- [CVE-2014-1303](https://insights.sbomify.com/CVE-2014-1303/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-1120](https://insights.sbomify.com/CVE-2010-1120/): Code injection in n/a (critical 10.0)
- [CVE-2009-0137](https://insights.sbomify.com/CVE-2009-0137/): Cross-site scripting in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9912 and fix it if it is affected.

What it is: CVE-2020-9912 is a low-severity vulnerability in Apple Safari, published on 16 Oct 2020. 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-2020-9912 in the wild and no public exploit code.

Affected product: Apple Safari. 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-2020-9912/ (Markdown: https://insights.sbomify.com/CVE-2020-9912/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9912
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9912
- OSV: https://osv.dev/vulnerability/CVE-2020-9912

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9912/
Summaries are generated and may contain mistakes; the official description above is the record.