Server-Side Request Forgery (SSRF) in Apache Kafka - CVE-2025-27817

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Main Vulnerability Database Vulnerabilities #VU112146

Server-Side Request Forgery (SSRF) in Apache Kafka - CVE-2025-27817

Published: July 3, 2025 / Updated: August 29, 2025


Vulnerability identifier: #VU112146
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/U:Amber
CVE-ID: CVE-2025-27817
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vendor: Apache Foundation
Affected software:
Apache Kafka

Detailed vulnerability description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in Apache Kafka Client. The application accepts configuration data for setting the SASL/OAUTHBEARER connection with the brokers, including "sasl.oauthbearer.token.endpoint.url" and "sasl.oauthbearer.jwks.endpoint.url". A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.


How to mitigate CVE-2025-27817

Install updates from vendor's website.

Sources