Use of cache containing sensitive information in libsoup - CVE-2025-9901

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Main Vulnerability Database Vulnerabilities #VU115012

Use of cache containing sensitive information in libsoup - CVE-2025-9901

Published: September 9, 2025


Vulnerability identifier: #VU115012
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-9901
CWE-ID: CWE-524
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Gnome Development Team
Affected software:
libsoup

Detailed vulnerability description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists in SoupCache due to the HTTP Vary header being ignored when evaluating cached response. A remote attacker can gain access to sensitive information that was cached by the application. 


How to mitigate CVE-2025-9901

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources