CVE-2026-40215

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion...

CVE-2026-40215

OpenVPN CVE-2026-40215 is a race condition during TLS session promotion that can cause a server crash or heap memory leak. Affected versions: 2.6.0–2.6.19 and 2.7_alpha1–2.7.1. Reported impact: potential denial of service through server instability and memory leakage. Remediation across advisorie...

CVE-2026-40215

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion...

Important: runfinch-finch

Issue Overview: An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state a...

CVE-2026-39827

A flaw was found in golang.org/x/crypto/ssh. An authenticated SSH client can cause a Denial of Service DoS by repeatedly opening channels that are rejected by the server. This leads to unbounded memory growth, eventually crashing the server process and affecting all connected users...

CVE-2026-42886

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/backups/upload endpoint decompresses the details entry from an uploaded .audiobookshelf ZIP file entirely into memory using zip.entryData, with no limit on the decompressed size. The upload middleware als...

CVE-2026-4635

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to archive the channel before removing persistent notifications which allows authenticated user to crash the server via timing the creation of persistent notification message between the server deleting...

EUVD-2026-34897

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire...

CVE-2026-8843

Creating a "2dspherebucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryableencryptedrange" indices. This issue affects MongoDB Server...

CVE-2026-50257

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

CVE-2026-50261 Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter. A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or f...

CVE-2026-50261

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter. A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or f...

CVE-2026-50257

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

CVE-2026-50257

CVE-2026-50257 affects the X.Org X server and Xwayland, with a use-after-free in miSyncDestroyFence(). A client that sets multiple fence triggers can trigger a use-after-free function pointer call when a second X connection destroys the fence. This could crash the X server or allow privilege esca...

SUSE-SU-2026:22080-1 Security update for samba

This update for samba fixes the following issues Security issues: - CVE-2026-1933: Missing access check on reparse point operations bsc1261188. - CVE-2026-2340: vfsworm does not block directory modification bsc1261158. - CVE-2026-3012: group policy certificate enrollment uses http: // without...

BIT-MYSQL-CLIENT-2026-35549

An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x before 11.8.6, and 12.x before 12.2.2. If the cachingsha2password authentication plugin is installed, and some user accounts are configured to use it, a large packet can crash the server because sha256cryptr uses allo...

BIT-MARIADB-MIN-2026-35549

An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x before 11.8.6, and 12.x before 12.2.2. If the cachingsha2password authentication plugin is installed, and some user accounts are configured to use it, a large packet can crash the server because sha256cryptr uses allo...

X.Org Server 缓冲区错误漏洞

X.Org is open-source free software developed by the X.Org Foundation. Xwayland is an open-source communication protocol developed by Xwayland that defines how communication between display servers and clients occurs. There are buffer overflow vulnerabilities in the X.Org X server and Xwayland,...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

mysql: InnoDB unspecified vulnerability (CPU Apr 2026)

Oracle CPU describes the issue as following: Vulnerability in the MySQL Server product of Oracle MySQL component: InnoDB. Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Easily exploitable vulnerability allows high privileged attacker with network access via...