# CVE-2024-45258: req may send an unintended request when a malformed URL is provided

> An attacker can cause unintended requests via malformed URLs in the Go req package, potentially bypassing security controls.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Aug 2024
- **Updated:** 26 Aug 2024
- **Also known as:** GHSA-cj55-gc7m-wvcq, GO-2024-3098

## What is CVE-2024-45258?

CVE-2024-45258 is a critical server-side request forgery vulnerability in n/a, published on 25 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The req package before 3.43.4 for Go may send an unintended request when a malformed URL is provided, because cleanHost in http.go intentionally uses a "garbage in, garbage out" design.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-45258?

9 open source packages ship an affected version, including github.com/imroc/req, github.com/imroc/req/v2 and github.com/imroc/req/v3.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/imroc/req` | Go | All versions | None |
| `github.com/imroc/req` | Go | All versions | 3.43.4 |
| `github.com/imroc/req` | Go | All versions | 3.43.4 |
| `github.com/imroc/req/v2` | Go | All versions | None |
| `github.com/imroc/req/v2` | Go | All versions | 3.43.4 |
| `github.com/imroc/req/v2` | Go | All versions | 3.43.4 |
| `github.com/imroc/req/v3` | Go | All versions | 3.43.4 |
| `github.com/imroc/req/v3` | Go | All versions | 3.43.4 |
| `github.com/imroc/req/v3` | Go | All versions | 3.43.4 |

## How do I fix CVE-2024-45258?

Upgrade github.com/imroc/req to 3.43.4 or later.

## Is CVE-2024-45258 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45258 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45258 and fix it if it is affected.

What it is: CVE-2024-45258 is a critical server-side request forgery vulnerability in n/a, published on 25 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45258 exists.

Affected packages and fixed versions:
- github.com/imroc/req (Go): affected all versions; no fix listed
- github.com/imroc/req (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req/v2 (Go): affected all versions; no fix listed
- github.com/imroc/req/v2 (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req/v2 (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req/v3 (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req/v3 (Go): affected all versions; fixed in 3.43.4
- github.com/imroc/req/v3 (Go): affected all versions; fixed in 3.43.4

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-2024-45258/ (Markdown: https://insights.sbomify.com/CVE-2024-45258/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45258
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45258
- OSV: https://osv.dev/vulnerability/CVE-2024-45258

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45258/
Summaries are generated and may contain mistakes; the official description above is the record.