CVE-2026-41726
In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.
| CWE | CWE-770 |
| Vendor | spring |
| Product | spring for apache kafka |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jun 9, 2026 |
Stay Ahead of the Next One
Get instant alerts for spring spring for apache kafka
Be the first to know when new medium vulnerabilities affecting spring spring for apache kafka are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Spring / Spring for Apache Kafka
4.0.0 < 4.0.6 3.3.0 < 3.3.16 3.2.0 < 3.2.14 2.9.0 < 2.9.14 2.8.0 < 2.8.12