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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-59739

CVE-2026-59739: 2 tracked advisory records across Apache, Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2024-23944 +1] Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check

    CVE-2026-59739Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attacker can discover ACL-restricted paths by registering exists-watches on non-existent paths, then reconnecting after the paths are created with restricted ACLs. Issue is caused by incomplete fix for CVE-2024-23944 (ZOOKEEPER-4799). The fix added ACL checking to WatchManager.triggerWatch(). However, DataTree.setWatches() — the SetWatches/SetWatches2 reconnect replay handler — still calls watcher.process(event) with null ACL, bypassing the check entirely. It's important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical. Users are…

    Related products — impact not confirmed
    • Apache ZooKeeper
    Source-reported affected versions
    • Apache ZooKeeper 3.9.0 through 3.9.5
    • Apache ZooKeeper 3.8.0 through 3.8.6
    Source-reported fixed versions
    • 3.9.6
    • 3.8.7
    Mitigation guidance
    • Users are recommended to upgrade to version 3.9.6, 3.8.7 which fixes the issue.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-59739] Information disclosure via SetWatches reconnect replay

    CVE-2026-59739Source published Source updated

    Information disclosure via SetWatches reconnect replay. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-425. Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Fuse 7; and 6 more.

    Related products — impact not confirmed
    • Red Hat AMQ Broker 7
    • Red Hat build of Apache Camel 4 for Quarkus 3
    • Red Hat build of Apache Camel for Spring Boot 4
    • Red Hat Fuse 7

    6 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 3.9.6
    • 3.8.7
    Mitigation guidance
    • Update to Apache ZooKeeper 3.8.7, 3.9.6, or later.
    Full advisory and evidenceOpen source bulletin

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