# CVE-2021-43058: Open redirect in REPLICATED CLASSIC

> An attacker can trick users into clicking a crafted link to redirect them to an untrusted site, potentially enabling phishing or spoofing attacks.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vjg6-28mm-fv75

## What is CVE-2021-43058?

CVE-2021-43058 is a medium-severity vulnerability in REPLICATED CLASSIC, published on 1 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An open redirect vulnerability exists in Replicated Classic versions prior to 2.53.1 that could lead to spoofing. To exploit this vulnerability, an attacker could send a link that has a specially crafted URL and convince the user to click the link, redirecting the user to an untrusted site.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2021-43058?

It affects 1 product.


Products: Replicated Replicated Classic.

## How do I fix CVE-2021-43058?

No fix has been published for CVE-2021-43058 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-43058 being exploited?

There is no known exploitation of CVE-2021-43058 in the wild and no public exploit code.

## Other vulnerabilities in REPLICATED CLASSIC

- [CVE-2020-10590](https://insights.sbomify.com/CVE-2020-10590/): Information disclosure in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-43058 and fix it if it is affected.

What it is: CVE-2021-43058 is a medium-severity vulnerability in REPLICATED CLASSIC, published on 1 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-43058 in the wild and no public exploit code.

Affected product: REPLICATED CLASSIC. 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-2021-43058/ (Markdown: https://insights.sbomify.com/CVE-2021-43058/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-43058
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-43058
- OSV: https://osv.dev/vulnerability/CVE-2021-43058

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-43058/
Summaries are generated and may contain mistakes; the official description above is the record.