Cyber Resilience

CVE-2025-30949

CriticalRCE

Published: 16 July 2025

Published
16 July 2025
Modified
23 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0037 59.2th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-30949 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 40.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-30949 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the WordPress plugin Site Chat on Telegram, developed by Guru Team. The flaw enables Object Injection and affects all versions from unknown initial release through 1.0.4. Published on 2025-07-16, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity.

Unauthenticated attackers can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. Successful exploitation grants high-impact access to confidentiality, integrity, and availability, potentially allowing arbitrary code execution or other severe outcomes common to PHP object injection flaws.

Mitigation details are available in advisories such as the Patchstack database entry: https://patchstack.com/database/Wordpress/Plugin/site-chat-on-telegram/vulnerability/wordpress-site-chat-on-telegram-1-0-4-php-object-injection-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in Guru Team Site Chat on Telegram site-chat-on-telegram allows Object Injection.This issue affects Site Chat on Telegram: from n/a through <= 1.0.4.

CWE(s)
CWE-502

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Direct unauthenticated RCE via deserialization/object injection in public-facing WordPress plugin.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2024-13770Shared CWE-502
CVE-2026-27303Shared CWE-502
CVE-2025-53586Shared CWE-502
CVE-2025-64353Shared CWE-502
CVE-2025-31047Shared CWE-502
CVE-2026-27096Shared CWE-502
CVE-2023-49886Shared CWE-502
CVE-2026-23542Shared CWE-502
CVE-2025-66631Shared CWE-502
CVE-2026-40044Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Flaw remediation directly addresses the deserialization vulnerability by requiring timely patching of the affected Site Chat on Telegram plugin up to version 1.0.4.

SI-10 Information Input Validation good match
prevent

Information input validation prevents untrusted data from being deserialized by checking and sanitizing Telegram chat inputs that could trigger object injection.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

Vulnerability monitoring and scanning identifies the presence of the CVE-2025-30949 deserialization flaw in the WordPress plugin, enabling remediation.

References