#VU109833 Interpretation Conflict in libsoup - CVE-2025-32908

Vulnerability identifier: #VU109833

Vulnerability risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-32908

CWE-ID: CWE-436

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libsoup
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libsoup: All versions

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External links
https://access.redhat.com/errata/RHSA-2025:7505
https://access.redhat.com/security/cve/CVE-2025-32908
https://bugzilla.redhat.com/show_bug.cgi?id=2359343

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.