CVE-2025-32907: Libsoup: denial of service in server when client requests a large amount of overlapping ranges with range header

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-14 · updated 2026-06-30
Weakness: CWE-1050

Description

A flaw was found in libsoup. The implementation of HTTP range requests is vulnerable to a resource consumption attack. This flaw allows a malicious client to request the same range many times in a single HTTP request, causing the server to use large amounts of memory. This does not allow for a full denial of service.

Affected products

Red Hat Enterprise Linux 10: all versions — fixed in 0:3.6.5-3.el10_0.6
Red Hat Enterprise Linux 8: all versions — fixed in 0:2.8-3.el8_10.1, 0:8.10-1
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.72.0-10.el9_6.1
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions: all versions — fixed in 0:2.72.0-8.el9_0.4
Red Hat Enterprise Linux 9.2 Extended Update Support: all versions — fixed in 0:2.72.0-8.el9_2.4
Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:2.72.0-8.el9_4.4

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:3.6.5-3.el10_0.6; Red Hat Enterprise Linux 8 0:2.8-3.el8_10.1, 0:8.10-1; Red Hat Enterprise Linux 9 0:2.72.0-10.el9_6.1; Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.4; Red Hat Enterprise Linux 9.2 Extended Update Support 0:2.72.0-8.el9_2.4; Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.4. Check the vendor advisory for mitigations.

References

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