#VU106094 Server-Side Request Forgery (SSRF) in Apache Druid - CVE-2025-27888

Vulnerability identifier: #VU106094

Vulnerability risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-27888

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Druid
Server applications / Database software

Vendor: Apache Foundation

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when Apache Druid is configured as a proxy. 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Apache Druid: 0.1.8 - 0.19.0, 0.2.0 - 0.23.0, 0.3.0 - 0.3.38, 0.4.0 - 0.4.32.2, 0.5.0 - 0.5.58, 0.6.0 - 0.6.174, 0.7.0 rc1 - 0.7.3, 0.8.0 rc1 - 0.8.3, 0.9.0 rc1 - 0.9.2, 24.0.0 rc1 - 24.0.2, 25.0.0 rc1 - 25.0.0, 26.0.0 rc1 - 26.0.0, 27.0.0 rc1 - 27.0.0, 28.0.0 rc1 - 28.0.1, 29.0.0 rc1 - 29.0.1, 30.0.0 rc1 - 30.0.1, 31.0.0 rc1 - 31.0.2 rc1, 32.0.0 rc1 - 32.0.1 rc1

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External links
https://lists.apache.org/thread/c0qo989pwtrqkjv6xfr0c30dnjq8vf39
https://www.openwall.com/lists/oss-security/2025/03/19/7
https://lists.apache.org/thread/j10ffb56k9rosc60tt9wcy3067q0hbvx

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.