CVE-2026-100235

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

Linux Distros Unpatched Vulnerability : CVE-2026-100235

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is...

CVE-2026-84439

A flaw was found in Apache ZooKeeper. When audit logging is enabled, an unauthenticated attacker can inject arbitrary fields into the audit log. This is achieved by sending a digest authentication request with tab characters embedded in the username, or by a client calling setACL with crafted...

CVE-2026-100235

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

CVE-2026-100235

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

EUVD-2026-116866

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

CVE-2026-100235 Apache ZooKeeper: ACL enforcement bypass allows unauthorized operations to commit after an ACL revocation

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

CVE-2026-100235

A time-of-check to time-of-use (TOCTOU) race condition exists in the setACL request handling of Apache ZooKeeper (up to and including version 3.9.6 ). When an ACL is changed, pending changes are not published to the server's outstanding change record. This allows a client to perform operations us...

PT-2026-136921

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

CVE-2026-100235: Apache Software Foundation Apache ZooKeeper: Incorrect authorization due to a time-of-check to time-of-use (TOCTOU) race condition in the setACL request handling of…

Incorrect authorization due to a time-of-check to time-of-use TOCTOU race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outstanding change record for that node. Any request that is prepare...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-146630)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-146630 advisory. In the Linux kernel, the following vulnerability has been resolved: nfsd: gate nfs2 setacl by argp-mask The NFSACL v2 SETACL path shares the decoder convention used...

Audit Log Injection

Apache ZooKeeper is vulnerable to audit log injection. The vulnerability is due to improper handling of tab characters in audit log serialization, where the server writes attacker‑controlled usernames and ACL identifiers into the acl= field without escaping tabs, and an attacker can send a digest...

Astra Linux – vulnerability in linux-6.1, linux-6.12

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak on SETACL decode failure nfsaclsvcdecodesetaclargs and nfs3svcdecodesetaclargs each call nfsstreamdecodeacl twice—once for NFSACL and once for NFSDFACL. Each successful call transfers ownership of a newly...

Astra Linux – vulnerability in dovecot

An attacker can use the IMAP SETACL command to inject “anyone” permissions into the user’s dovecot-acl file, even when imapaclallowanyone=no is set. This results in folders being emailed to all users. The effect is limited to being able to spam folders to other users; no unauthorized access is...

Rocky Linux 9.6 [TuxCare] Security Update: dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1781096989)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1781096989 advisory. - Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires...

AlmaLinux 9.6 [TuxCare] Security Update: dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1781096989)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1781096989 advisory. - Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires...

AlmaLinux 9.2 [TuxCare] Security Update: dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1780910915)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1780910915 advisory. - Attacker can upload a malicious Sieve script over ManageSieve service or locally to bypass configured CPU time limits for Sieve up...

PT-2026-95846

When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters t embedded in the username. Because the audit log uses tab-separated key=value format...

Linux Distros Unpatched Vulnerability : CVE-2026-84439

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending ...

DEBIAN-CVE-2026-84439

When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters \t embedded in the username. Because the audit log uses tab-separated key=value forma...