What is CVE-2025-27817?

CVE-2025-27817 is a high-severity vulnerability in Apache Kafka, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2025-06-10.

How severe is CVE-2025-27817?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-27817 known to be exploited?

10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Apache Kafka

CVE-2025-27817

A possible arbitrary file read and SSRF vulnerability has been identified in Apache Kafka Client. Apache Kafka Clients accept configuration data for setting the SASL/OAUTHBEARER connection with the brokers, including "sasl.oauthbearer.toke…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.647 (99.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Kafka
Apache Software Foundation Kafka Client — versions 3.1.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-27817?: CVE-2025-27817 is a high-severity vulnerability in Apache Kafka, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2025-06-10.
How severe is CVE-2025-27817?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-27817 known to be exploited?: 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.