High [CVE-2026-115448] Denial of Service via deeply nested znodes during snapshot creation
This high-severity Red Hat Linux advisory covers CVE-2026-115448; related products: Red Hat AMQ Broker 7, Red Hat Fuse 7, Red Hat Offline Knowledge Portal.
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Summary
Denial of Service via deeply nested znodes during snapshot creation. Red Hat rates this important (CVSS 7.5).
Weakness: CWE-770.
Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat Fuse 7; Red Hat Offline Knowledge Portal; Red Hat OpenShift AI (RHOAI).
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Restrict network exposure and enforce strict authentication and Access Control Lists (ACLs) on ZooKeeper instances: 1. Network Isolation: Limit access to ZooKeeper service ports (such as TCP port 2181) strictly to trusted application infrastructure using firewalld: ``` firewall-cmd --zone=trusted --add-source=<trusted-client-ip> --permanent firewall-cmd --permanent --remove-port=2181/tcp firewall-cmd --reload ``` 2. Access Control Configuration: Configure authentication (such as SASL or digest) and replace the default open root ACL to revoke unauthenticated creation rights on the root path using the administrative client: ``` setAcl / auth:<user>:<password>:cdwra ``` Caveats: Applying strict ACLs and restricting network ports will block clients that rely on anonymous or unauthenticated connections until valid credentials are provided. Warning: Reloading firewall rules or modifying ZooKeeper configuration parameters may cause transient service interruptions or require restarting dependent cluster components.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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