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.
References10
- access.redhat.com/errata/RHSA-2025:4439
- access.redhat.com/errata/RHSA-2025:4440
- access.redhat.com/errata/RHSA-2025:4508
- access.redhat.com/errata/RHSA-2025:4538
- access.redhat.com/errata/RHSA-2025:4560
- access.redhat.com/errata/RHSA-2025:4568
- access.redhat.com/errata/RHSA-2025:4609
- access.redhat.com/errata/RHSA-2025:4624
- access.redhat.com/errata/RHSA-2025:7436
- access.redhat.com/errata/RHSA-2025:7505
Metrics
- CVSS 3.1
-
6.8
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 1% percentile: 48 · as of 7 November 2026
- CWE
- CWE-497
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.