CVE-2025-61735 Apache Kylin: Server-Side Request Forgery

High 7.3 Published Updated

Attackers can exploit a Server-Side Request Forgery flaw in Apache Kylin to access internal resources if admin access is not properly protected.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-61735?

CVE-2025-61735 is a high-severity server-side request forgery vulnerability in Apache Kylin, published on 2 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Server-Side Request Forgery (SSRF) vulnerability in Apache Kylin.

This issue affects Apache Kylin: from 4.0.0 through 5.0.2. You are fine as long as the Kylin's system and project admin access is well protected.

Users are recommended to upgrade to version 5.0.3, which fixes the issue.

Weakness: CWE-918

Which versions are affected by CVE-2025-61735?

14 open source packages ship an affected version, including org.apache.kylin:kylin, org.apache.kylin:kylin-common-server and org.apache.kylin:kylin-common-service. It affects 1 product.

PackageAffectedFixed in
org.apache.kylin:kylin MavenFrom 4.0.05.0.3
org.apache.kylin:kylin MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-common-server MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-common-server MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-common-service MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-common-service MavenFrom 4.0.05.0.3
8 more packages
org.apache.kylin:kylin-core-common MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-core-common MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-core-metadata MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-core-metadata MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-ops-server MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-ops-server MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-server MavenFrom 4.0.05.0.3
org.apache.kylin:kylin-server MavenFrom 4.0.05.0.3

Products include Apache Kylin.

How do I fix CVE-2025-61735?

Upgrade org.apache.kylin:kylin to 5.0.3 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2025-61735 being exploited?

There is no known exploitation of CVE-2025-61735 in the wild and no public exploit code.

Sources

Also known as GHSA-f6m8-qm7j-fh65.

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