CVE-2025-46421 (CVSS 6.8)

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.

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CVSS v3.1 Score

6.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-497 CWE-497

References

Other References

https://access.redhat.com/errata/RHSA-2025:4439 https://access.redhat.com/errata/RHSA-2025:4440 https://access.redhat.com/errata/RHSA-2025:4508 https://access.redhat.com/errata/RHSA-2025:4538 https://access.redhat.com/errata/RHSA-2025:4560 https://access.redhat.com/errata/RHSA-2025:4568 https://access.redhat.com/errata/RHSA-2025:4609 https://access.redhat.com/errata/RHSA-2025:4624 https://access.redhat.com/errata/RHSA-2025:7436 https://access.redhat.com/errata/RHSA-2025:7505

Frequently Asked Questions

What is CVE-2025-46421? +

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. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2025-46421? +

CVE-2025-46421 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-46421? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-46421