CVE-2026-56357

n8n’s GitHub Webhook Trigger node is affected in versions before 1.123.15 and 2.5.0 due to missing HMAC-SHA256 signature verification. This allows an attacker who knows the webhook URL to send unsigned POST requests, potentially triggering workflows with arbitrary data and spoofing GitHub webhook...

CVE-2026-56357 n8n - Webhook Forgery via Missing HMAC-SHA256 Signature Verification in GitHub Webhook Trigger

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhoo...

CVE-2026-41244

Mojic is a CLI tool to transform readable C code into an unrecognizable chaotic stream of emojis. Prior to 2.1.4, the CipherEngine uses a standard equality operator !== to verify the HMAC-SHA256 integrity seal during the decryption phase. This creates an Observable Timing Discrepancy CWE-208,...

CVE-2026-47123 FreeScout: Agent Impersonation via Missing HMAC Verification on Notification Reply Message-ID Path

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.220, the email processing pipeline in FreeScout's FetchEmails command has two code paths for identifying agent user replies based on In-Reply-To / References headers. The notification reply path...

CVE-2026-39969

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint POST /v1/workspaces/workspaceId/whatsapp/credentialsId/webhook does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both...

PT-2026-41777

JWT.decodetoken, '', true, algorithm: 'HS256' accepts an attacker-forged token. OpenSSL::HMAC.digest'SHA256', '', payload returns a valid digest under an empty key, and no raise InvalidKeyError if key.empty? precondition exists in the HMAC algorithm. JWT.decodetoken, "", true, algorithm: 'HS256' ...

CVE-2026-44699

LibJWT (C JSON Web Token library) versions 3.0.0–3.3.2 are vulnerable when an RSA JWK without an alg parameter is used as the verification key for HS256/HS384/HS512. In the OpenSSL backend, this can cause HMAC verification to run with a zero-length key, enabling an attacker to forge a valid JWT w...

EUVD-2026-30560

LibJWT is a C JSON Web Token Library. From 3.0.0 to 3.3.2, libjwt accepts an RSA JWK that does not contain an alg parameter as the verification key for an HS256/HS384/HS512 token. In the OpenSSL backend, this causes HMAC verification to run with a zero-length key, so an attacker can forge a valid...

CVE-2026-44699 LibJWT: Algorithm confusion allows JWT forgery with RSA JWK as empty-key HMAC

LibJWT is a C JSON Web Token Library. From 3.0.0 to 3.3.2, libjwt accepts an RSA JWK that does not contain an alg parameter as the verification key for an HS256/HS384/HS512 token. In the OpenSSL backend, this causes HMAC verification to run with a zero-length key, so an attacker can forge a valid...

CVE-2026-44351

fast-jwt provides fast JSON Web Token JWT implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When the application's key resolver returns an...

GHSA-4RHG-H8F2-V4JM pgAdmin 4 has deserialization of untrusted data in its FileBackedSessionManager

Deserialization of untrusted data CWE-502 in pgAdmin 4 FileBackedSessionManager. The session manager performed unsafe deserialization of session-file contents using Python's standard object-serialization module before performing any HMAC integrity check. Any file dropped into the sessions directo...

pgAdmin 4 has deserialization of untrusted data in its FileBackedSessionManager

Deserialization of untrusted data CWE-502 in pgAdmin 4 FileBackedSessionManager. The session manager performed unsafe deserialization of session-file contents using Python's standard object-serialization module before performing any HMAC integrity check. Any file dropped into the sessions directo...

CVE-2026-7818

Deserialization of untrusted data CWE-502 in pgAdmin 4 FileBackedSessionManager. The session manager performed unsafe deserialization of session-file contents using Python's standard object-serialization module before performing any HMAC integrity check. Any file dropped into the sessions directo...

CVE-2026-7818

CVE-2026-7818 affects pgAdmin 4: Unsafe deserialization in FileBackedSessionManager allows an authenticated user with write access to the sessions directory to craft a payload that could lead to operating-system level remote code execution under the pgAdmin process identity. The root cause is des...

GHSA-MHC4-QQ83-FMRR axonflow-sdk-go: Webhook signing-key (HMAC-SHA256) not exposed by SDK type, preventing signature verification

Summary The AxonFlow SDK's WebhookSubscription or equivalent type did not expose the HMAC-SHA256 signing key returned by the platform's CreateWebhook endpoint. Without access to the secret through the typed SDK API, callers had no path to verify the X-AxonFlow-Signature header on incoming webhook...

PT-2026-35067

Name of the Vulnerable Software and Affected Versions Mojic versions prior to 2.1.4 Description The CipherEngine uses a standard equality operator !== to verify the HMAC-SHA256 integrity seal during the decryption phase. This creates an Observable Timing Discrepancy, which is a situation where th...

SUSE SLES15 Security Update : nodejs22 (SUSE-SU-2026:1509-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1509-1 advisory. Update to version 22.22.2. - CVE-2026-21717: trivially predictable hash collisions due to flaw in V8's string hashing mechanism...

OESA-2026-1953 nodejs security update

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices...

CoinMate.io: HMAC signature verification omits endpoint and payload allowing request forgery on CoinMate API

A vulnerability was discovered in the HMAC signature verification process of the CoinMate API. The signature was calculated using only the nonce, client ID, and public key, omitting the HTTP endpoint and request payload. This allowed an attacker to hijack a valid signature intended for a read-onl...

OPENSUSE-SU-2026:20519-1 Security update for nodejs24

This update for nodejs24 fixes the following issues: Update to version 24.14.1. Security issues fixed: - CVE-2026-21717: trivially predictable hash collisions due to flaw in V8's string hashing mechanism allows for performance degradation via a crafted request bsc1260494. - CVE-2026-21716:...