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Vulnerabilities

Vulnerability · CVE-2025-46421

A flaw was found in libsoup.

Published Apr 24, 2025 · catalog updated Jul 25, 2026 · Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Check if you run it

No confirmed exploitation is on record for CVE-2025-46421. EPSS is 0.57%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.57%
Remediation
Vendor / distro source
Affected products
vendor Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support patch: 0:2.72.0-8.el9_4.4

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support patch: 0:2.72.0-8.el9_4.4patch: 0:2.72.0-8.el9_4.4

How to fix CVE-2025-46421

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-46421. EPSS is 0.57%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support is installed.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support patch: 0:2.72.0-8.el9_4.4 patch: 0:2.72.0-8.el9_4.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.57%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 24, 2025 · EUVD

    Detected

    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.

  2. Jul 25, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-46421

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-46421

    30-day exploitation probability 0.6%

    first.org
  • EUVDVulnerability recordEUVD-2025-12111

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.