•41 minutes ago•CVE-2026-53462
5.9CVE-2026-53462: Heap Use-After-Free Vulnerability in ImageMagick Vector Drawing Subsystem
CVE-2026-53462 is a heap Use-After-Free (UAF) vulnerability in ImageMagick's vector drawing subsystem, specifically within the coordinate allocation mechanism in CheckPrimitiveExtent. By parsing a crafted vector image (such as SVG or MVG) with extremely complex primitives, an attacker can trigger a memory reallocation failure. If the application fails to handle this allocation failure cleanly, it leaves a dangling pointer that can subsequently be accessed or freed again, causing memory corruption or an application crash.
1 views•7 min read
•about 3 hours ago•CVE-2026-39832
9.1CVE-2026-39832: Silent Drop of Destination Constraints in golang.org/x/crypto SSH Agent Client
A critical security flaw was identified in the Go package golang.org/x/crypto/ssh/agent. The vulnerability arises during the serialization of key constraints when adding SSH identities to a remote agent or an in-memory keyring. Specifically, custom constraint extensions, such as destination restrictions like restrict-destination-v00@openssh.com, were silently omitted from serialization in client requests. This omission allowed keys to be loaded into the remote agent with zero destination-based restrictions, enabling unauthorized users with access to the agent socket on intermediate hosts to authenticate to any downstream host without policy enforcement. The issue was resolved in version v0.52.0 of the golang.org/x/crypto library.
3 views•7 min read
•about 4 hours ago•CVE-2026-46597
7.5CVE-2026-46597: Remote Denial of Service in golang.org/x/crypto/ssh via AES-GCM Padding Integer Overflow
A high-severity Denial of Service (DoS) vulnerability (CVE-2026-46597 / GO-2026-5013) exists in the golang.org/x/crypto/ssh module before version v0.52.0. The flaw stems from an incorrect operator order during a type conversion of the GCM packet padding size, allowing a remote, unauthenticated attacker to trigger an out-of-bounds slice runtime panic and crash the Go process.
4 views•7 min read
•about 8 hours ago•CVE-2026-39828
6.3CVE-2026-39828: Go SSH Server PartialSuccessError Permissions Discard Bypass
A critical security bypass vulnerability was discovered in the Go SSH server implementation within the golang.org/x/crypto/ssh package. When an SSH server authentication callback returned a PartialSuccessError alongside non-nil Permissions, the server silently discarded these permissions before the subsequent authentication step. Consequently, once the user completed the second-factor authentication, the session-level restrictions were dropped, granting the client unauthorized capabilities.
5 views•7 min read
•about 9 hours ago•CVE-2026-39835
5.3CVE-2026-39835: Remote Denial of Service via Null Pointer Dereference in Go SSH CertChecker
A Denial of Service (DoS) vulnerability exists in the Go SSH implementation package (golang.org/x/crypto/ssh). The vulnerability is caused by a null pointer dereference (runtime panic) when CertChecker is utilized as a public key callback but its validation fields, IsUserAuthority or IsHostAuthority, are uninitialized.
8 views•7 min read
•about 9 hours ago•CVE-2026-39827
6.5CVE-2026-39827: Denial of Service via Unbounded Memory Growth in Go SSH (golang.org/x/crypto/ssh)
An unbounded memory leak vulnerability in the Go SSH package (golang.org/x/crypto/ssh) allows authenticated users to crash the server by repeatedly requesting connection channels that are rejected, leading to system resource exhaustion.
7 views•6 min read
•about 10 hours ago•CVE-2026-39830
9.1CVE-2026-39830: Unsolicited Response Channel Deadlock and Resource Leak in golang.org/x/crypto/ssh
A denial-of-service (DoS) and resource leak vulnerability in the Go SSH package (golang.org/x/crypto/ssh) allows a malicious peer to permanently deadlock connection processing loops and leak memory. This issue stems from improper handling of unsolicited responses at the global and channel layers, which saturate internal bounded channel buffers and block the main multiplexer loop. The vulnerability is fully resolved in version 0.52.0.
5 views•7 min read
•about 12 hours ago•CVE-2026-39829
7.5CVE-2026-39829: Denial of Service in Go SSH Parser
A high-severity Denial of Service (DoS) vulnerability exists in the golang.org/x/crypto/ssh package prior to version 0.52.0. The vulnerability is caused by a lack of size and range validation on incoming RSA and DSA public key parameters during SSH authentication. An unauthenticated attacker can submit a crafted public key with pathologically large parameters, triggering intensive CPU computation during signature verification and leading to a complete Denial of Service.
6 views•5 min read
•about 14 hours ago•CVE-2026-39831
9.1CVE-2026-39831: Authentication Bypass in golang.org/x/crypto/ssh via FIDO/U2F User Presence Bypass
An authentication bypass vulnerability was identified in the golang.org/x/crypto/ssh package. The library's verification logic for FIDO/U2F security keys failed to check the User Presence (UP) flag. This omission allows an attacker with access to a hardware token interface or an agent-forwarding socket to authenticate without physical user interaction.
6 views•5 min read
•about 15 hours ago•CVE-2026-39834
9.1CVE-2026-39834: Infinite Loop and CPU Exhaustion via Integer Truncation in Go SSH Channel Write
A critical vulnerability exists in the Go SSH sub-repository (golang.org/x/crypto/ssh) before version 0.52.0. When an application writes payloads of 4GB or larger in a single write operation, integer truncation in the remote window calculation causes an infinite loop. This results in complete CPU core exhaustion and a denial-of-service condition.
9 views•7 min read
•about 17 hours ago•CVE-2026-42508
9.1CVE-2026-42508: Bypass of SSH Certificate Authority Revocation in golang.org/x/crypto/ssh/knownhosts
An issue was discovered in Go's `golang.org/x/crypto/ssh/knownhosts` package where a revoked Certification Authority (CA) public key was not correctly checked for revocation during SSH host certificate validation. This allowed clients or servers utilizing the library to validate and trust host certificates issued by explicitly revoked CAs.
9 views•5 min read
•about 18 hours ago•CVE-2026-46595
10.0CVE-2026-46595: Critical Authorization Bypass via source-address Validation Failure in golang.org/x/crypto/ssh
An authorization bypass vulnerability exists in the golang.org/x/crypto/ssh package prior to version 0.52.0. When an SSH server is configured with a custom VerifiedPublicKeyCallback that returns a Permissions object containing a source-address critical option, the server fails to validate and enforce the restriction. This allows remote clients with valid public keys to bypass IP-based access restrictions and authenticate from unauthorized network locations.
6 views•7 min read