CVE-2026-111868 datastax pulsar-jms PulsarObjectMessage.java decode deserialization
Remote attackers can exploit unsafe deserialization in PulsarObjectMessage to execute arbitrary code, requiring immediate attention from users of the library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111868?
CVE-2026-111868 is a medium-severity unsafe deserialization vulnerability in datastax pulsar-jms, published on 18 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in datastax pulsar-jms up to 9.0.3. This issue affects the function decode of the file pulsar-jms/src/main/java/com/datastax/oss/pulsar/jms/messages/PulsarObjectMessage.java. This manipulation causes deserialization. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-111868?
How do I fix CVE-2026-111868?
No fix has been published for CVE-2026-111868 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-111868 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111868 exists.
Sources
Also known as GHSA-rp78-2737-x9fc.