# CVE-2020-9056: Periscope BuySpeed version 14.5 is vulnerable to stored cross-site scripting

> An authenticated attacker can inject malicious scripts into Periscope BuySpeed, leading to session hijacking or data theft for other users.

- **Severity:** Low 3.9 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Apr 2020
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-wjv4-hrhp-xqqp

## What is CVE-2020-9056?

CVE-2020-9056 is a low-severity cross-site scripting vulnerability in Periscope Holdings BuySpeed, published on 10 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Periscope BuySpeed version 14.5 is vulnerable to stored cross-site scripting, which could allow a local, authenticated attacker to store arbitrary JavaScript within the application. This JavaScript is subsequently displayed by the application without sanitization and is executed in the browser of the user, which could possibly cause website redirection, session hijacking, or information disclosure. This vulnerability has been patched in BuySpeed version 15.3.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2020-9056?

It affects 1 product.


Products: Periscopeholdings Buyspeed.

## How do I fix CVE-2020-9056?

No fix has been published for CVE-2020-9056 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9056 being exploited?

There is no known exploitation of CVE-2020-9056 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9056 and fix it if it is affected.

What it is: CVE-2020-9056 is a low-severity cross-site scripting vulnerability in Periscope Holdings BuySpeed, published on 10 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-9056 in the wild and no public exploit code.

Affected product: Periscope Holdings BuySpeed. 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-2020-9056/ (Markdown: https://insights.sbomify.com/CVE-2020-9056/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9056
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9056
- OSV: https://osv.dev/vulnerability/CVE-2020-9056

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-9056/
Summaries are generated and may contain mistakes; the official description above is the record.