{"id":59573,"date":"2025-07-22T23:41:30","date_gmt":"2025-07-22T23:41:30","guid":{"rendered":""},"modified":"2025-08-31T06:32:13","modified_gmt":"2025-08-31T12:32:13","slug":"cve-2025-30949-critical-deserialization-vulnerability-in-guru-team-site-chat-on-telegram","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-30949-critical-deserialization-vulnerability-in-guru-team-site-chat-on-telegram\/","title":{"rendered":"CVE-2025-30949: Critical Deserialization Vulnerability in Guru Team Site Chat on Telegram<\/strong>"},"content":{"rendered":"

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

The CVE-2025-30949 identifies a critical vulnerability in the Guru Team Site Chat on Telegram. The vulnerability, known as Deserialization of Untrusted Data, opens up the possibility for malicious actors to inject harmful objects into the system. The flaw affects all versions of the application up to 1.0.4. Given the severity score of 9.8, this vulnerability presents a significant risk to any organization using the affected versions of the application, potentially leading to system<\/a> compromise or data leakage.<\/p>\n

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

CVE ID: CVE-2025-30949
\nSeverity: Critical (CVSS score 9.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Guru Team Site Chat on Telegram | All versions<\/a> up to 1.0.4<\/p>\n

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

The vulnerability lies in the application’s handling of data<\/a> deserialization. Specifically, the flaw allows an attacker to inject<\/a> malicious serialized objects into the data stream being processed by the application. Once the application deserializes these objects, the malicious code contained within them can be executed, potentially compromising the system or leading<\/a> to data leakage.<\/p>\n

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

To demonstrate, consider this conceptual example of a JSON payload carrying the serialized malicious object. The attacker sends this payload to the application, which then deserializes the object and initiates the unintended actions:<\/p>\n

POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"serialized_object\": \"rO0ABXNyABdqYXZhLnV0aWwuSGFzaFNldLpEhZ5+3gIAAHhyAB1qYXZhLnV0aWwuQWJzdHJhY3RTZXRk5B0hM+z4+AAAABwAAAHhwdwQAAAAeAAAAAnNyABBqYXZhLmxhbmcuUnVudGltZQAAAAAAAAABAgAAeHA=\" }<\/code><\/pre>\n
Note that the actual malicious payload would be more complex and tailored to the specific target.<\/p>\n
Mitigation<\/strong><\/p>\n
Users are advised to apply the patch provided by the vendor as soon as possible. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary mitigation by identifying and blocking attempts to exploit this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The CVE-2025-30949 identifies a critical vulnerability in the Guru Team Site Chat on Telegram. The vulnerability, known as Deserialization of Untrusted Data, opens up the possibility for malicious actors to inject harmful objects into the system. The flaw affects all versions of the application up to 1.0.4. Given the severity score of 9.8, this […]<\/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":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59573","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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