#VU109938 Information disclosure in libsoup - CVE-2025-46421

Vulnerability identifier: #VU109938

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-46421

CWE-ID: CWE-200

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 gain access to potentially sensitive information.

The vulnerability exists due to libsoup includes authorization headers into requests when handling HTTP redirects. A remote attacker can gain access to credentials intended for a different website.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libsoup: 3.6.0 - 3.6.4

---

External links
https://bugzilla.redhat.com/show_bug.cgi?id=2361962

---

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.