# CVE-2025-46421: Information disclosure in Red Hat Enterprise Linux 10

> Attackers can steal authorization headers when libsoup clients follow redirects, allowing impersonation of users to the original host.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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:** Yes
- **Published:** 24 Apr 2025
- **Updated:** 25 Jul 2026
- **Also known as:** AZL-61498, AZL-61630, DEBIAN-CVE-2025-46421, GHSA-pr7v-prvv-52v8, UBUNTU-CVE-2025-46421

## What is CVE-2025-46421?

CVE-2025-46421 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 24 Apr 2025. 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

A flaw was found in libsoup. When libsoup clients encounter an HTTP redirect, they mistakenly send the HTTP Authorization header to the new host that the redirection points to. This allows the new host to impersonate the user to the original host that issued the redirect.

Weakness: CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere)

## Which versions are affected by CVE-2025-46421?


## How do I fix CVE-2025-46421?

Apply the vendor's patch.

## Is CVE-2025-46421 being exploited?

There is no known exploitation of CVE-2025-46421 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-46421 and fix it if it is affected.

What it is: CVE-2025-46421 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 24 Apr 2025. 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-2025-46421 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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-2025-46421/ (Markdown: https://insights.sbomify.com/CVE-2025-46421/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-46421
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-46421
- OSV: https://osv.dev/vulnerability/CVE-2025-46421

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-46421/
Summaries are generated and may contain mistakes; the official description above is the record.