CVE-2026-59317 Denial of service in Spring for Apache Kafka
Attackers can cause denial of service in Spring for Apache Kafka by sending malformed headers that trigger infinite retry loops.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59317?
CVE-2026-59317 is a medium-severity denial of service vulnerability in Spring for Apache Kafka, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
DeadLetterPublishingRecovererFactory reads the retry_topic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigInteger(header.value()) with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for Apache Kafka 3.0.0 - 3.3.16 Spring for Apache Kafka 2.9.0 - 2.9.14 Spring for Apache Kafka 2.8.12 and earlier
Weakness: CWE-1284
Which versions are affected by CVE-2026-59317?
It affects 1 product.
Products include Vmware Spring for Apache Kafka.
How do I fix CVE-2026-59317?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-59317 being exploited?
There is no known exploitation of CVE-2026-59317 in the wild and no public exploit code.
Other vulnerabilities in Spring for Apache Kafka
- CVE-2026-59278 Server-side request forgery in Spring for Apache Kafka
- CVE-2026-41726 In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header
- CVE-2026-41727 In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior
- CVE-2023-34040 Java Deserialization vulnerability in Spring-Kafka When Improperly Configured
Sources
Also known as CLSA-2026-1792590657, GHSA-v648-fvf7-jrg2.