{"id":87049,"date":"2026-06-05T15:20:42","date_gmt":"2026-06-05T15:20:42","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-11021-critical-memory-disclosure-vulnerability-in-libsoup-http-library","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-11021-critical-memory-disclosure-vulnerability-in-libsoup-http-library\/","title":{"rendered":"CVE-2025-11021: Critical Memory Disclosure Vulnerability in libsoup HTTP Library<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

A critical vulnerability, known as CVE-2025-11021, has been identified in the widely used libsoup HTTP library. This flaw pertains to the library’s cookie date handling logic, with potential consequences including system compromise and data leakage. This vulnerability is particularly significant due to the widespread usage of the libsoup library in GNOME and other web communication applications.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-11021
\nSeverity: High (7.5 CVSS)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise and unintended disclosure of memory contents<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

libsoup | All versions prior to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability lies in the cookie date handling logic of the libsoup HTTP library. It is triggered when processing cookies with specially crafted expiration dates, leading to an out-of-bounds memory read. This can result in the unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here is a conceptual example of how a specially crafted cookie might trigger the vulnerability:<\/p>\n

GET \/ HTTP\/1.1\nHost: vulnerable.example.com\nCookie: session=12345; expires=Thu, 01-Jan-1970 00:00:00 GMT; path=\/;<\/code><\/pre>\n
In this example, the `expires` attribute of the cookie has been crafted in such a way to trigger the out-of-bounds memory read in the libsoup HTTP library.<\/p>\n
Implications and Mitigations<\/strong><\/p>\n
Successful exploitation of this vulnerability could lead to a potential system compromise or data leakage. This could have severe impacts on the confidentiality, integrity, and availability of the affected system.
\nOrganizations are advised to apply the vendor-released patch as soon as possible. As a temporary mitigation, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) could be used to detect and block attempts to exploit this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability, known as CVE-2025-11021, has been identified in the widely used libsoup HTTP library. This flaw pertains to the library’s cookie date handling logic, with potential consequences including system compromise and data leakage. This vulnerability is particularly significant due to the widespread usage of the libsoup library in GNOME and other web […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87049","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t