Is CVE-2025-46421 in the CISA KEV catalog?

No. CVE-2025-46421 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-46421?

CVE-2025-46421 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2025-46421?

CVE-2025-46421 has an EPSS score of 0.48% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-46421?

Upgrade libsoup on rhel 8 to 0:2.62.3-2.el8_4.4 or later. Fixes are available for 23 affected products.

CVE & CISA-KEV Catalog

CVE-2025-46421

MEDIUM

6.8

CVSS v3

NVD

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.

CWE-497

How to fix

Remediation Available

libsoupRed Hat / RHEL

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

libsoupRocky

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

libsoup-debuginfoRed Hat / RHEL

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

libsoup-debuginfoRocky

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

libsoup-debugsourceRocky

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

libsoup-debugsourceRed Hat / RHEL

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

libsoup-develRocky

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

libsoup-develRed Hat / RHEL

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

libsoup3Red Hat / RHEL

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3Rocky

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-debuginfoRocky

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-debuginfoRed Hat / RHEL

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-debugsourceRocky

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-debugsourceRed Hat / RHEL

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-develRed Hat / RHEL

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-develRocky

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-docRed Hat / RHEL

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup3-docRocky

Fixed in:0:3.6.5-3.el10_0RHSA-2025:7505

libsoup-2.4-1Ubuntu

Fixed in:2.74.3-6ubuntu1.3USN-7490-1

libsoup-3.0-0Ubuntu

Fixed in:3.0.7-0ubuntu1+esm3USN-7490-3

Fixed in:3.4.4-5ubuntu0.3USN-7490-3

libsoup2.4Ubuntu

Fixed in:2.52.2-1ubuntu0.3+esm1USN-7490-1

Fixed in:2.62.1-1ubuntu0.4+esm2USN-7490-1

Fixed in:2.70.0-1ubuntu0.3USN-7490-1

Fixed in:2.74.2-3ubuntu0.3USN-7490-1

Fixed in:2.74.3-6ubuntu1.3USN-7490-1

libsoup2.4-1Ubuntu

Fixed in:2.52.2-1ubuntu0.3+esm1USN-7490-1

Fixed in:2.62.1-1ubuntu0.4+esm2USN-7490-1

Fixed in:2.70.0-1ubuntu0.3USN-7490-1

Fixed in:2.74.2-3ubuntu0.3USN-7490-1

libsoup3Ubuntu

Fixed in:3.0.7-0ubuntu1+esm3USN-7490-3

Fixed in:3.4.4-5ubuntu0.3USN-7490-3

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.48%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Other references13

Embed a live status badge for CVE-2025-46421

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.