CVE-2026-71858

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++...

CVE-2026-71858

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++...

CVE-2026-71858

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++...

CVE-2026-71858 Notepad++: shortcuts.xml Macro HMAC Bypass Enables Conditional Elevated Command Execution

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, macros loaded from an attacker-controlled shortcuts.xml bypass the HMAC validation applied to UserDefinedCommands and can invoke Scintilla actions and the internal Open in Default Viewer command in an elevated Notepad++...

CVE-2026-74890 openssl_encrypt before 1.4.0 HMAC Authentication Bypass via Environment Variable

opensslencrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that disables HMAC tag generation and verification when the PYTESTCURRENTTEST environment variable is set. Attackers with code execution can set this environment variable to produce unauthenticat...

EUVD-2026-60109

opensslencrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that disables HMAC tag generation and verification when the PYTESTCURRENTTEST environment variable is set. Attackers with code execution can set this environment variable to produce unauthenticat...

Seraphinite Accelerator <= 2.29.18 - Cross-Site Scripting

The Seraphinite Accelerator plugin for WordPress up to and including 2.29.18 was vulnerable to reflected cross-site scripting through the seraphaccelprep parameter. CacheExtractPreparePageParams compared the expected HMAC against the JSON-decoded nonce with PHP's loose != operator, so a JSON...

CVE-2026-15205

The CVE concerns the Paymob for WooCommerce WordPress plugin (versions

CVE-2026-73840

OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, the POST /api/v1alpha1/autobuild endpoint in internal/openchoreo-api/api/handlers/webhookhandler.go selected a webhook provider from caller-controlled X-Event-Key, accepted Bitbucket...

Linux Distros Unpatched Vulnerability : CVE-2026-53501

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's HMAC validation can be bypassed due to the use of Python's .replace wh...

python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens

A flaw was found in PyJWT, a Python library for JSON Web Token JWT implementation. When decoding JWTs, the library fails to validate the use of JSON Web Keys JWK in the HMAC algorithm while also supporting asymmetric algorithms. This allows a remote attacker to use the issuer's public key as the...

CVE-2026-53501 Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor’s HMAC validation can be bypassed due to the use of Python’s .replace when removing the signature from the URL before validation. Since .replace removes all occurrences of the substring, an attacker can insert...

CVE-2026-53501 Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor’s HMAC validation can be bypassed due to the use of Python’s .replace when removing the signature from the URL before validation. Since .replace removes all occurrences of the substring, an attacker can insert...

CVE-2026-53501

Thumbor (open-source image thumbnail service by globo.com) is affected prior to version 7.8.0. The vulnerability stems from using Python’s .replace() to strip the signature from the URL before HMAC validation, which removes all occurrences of the substring. An attacker can insert the same signatu...

CVE-2026-45363

CVE-2026-45363 affects the ruby-jwt gem (Ruby implementation of JWT). Prior to versions 2.10.3 and 3.2.0, JWT.decode(token, '', true, algorithm: 'HS256') can accept attacker-forged tokens because OpenSSL::HMAC.digest('SHA256', '', payload) yields a valid digest with an empty key, and empty-key pa...

CVE-2026-45363 `jwt` (Ruby gem) - empty-key HMAC bypass

ruby-jwt is a Ruby implementation of the RFC 7519 OAuth JSON Web Token standard. Prior to 2.10.3 and 3.2.0, JWT.decodetoken, '', true, algorithm: 'HS256' accepts an attacker-forged token because OpenSSL::HMAC.digest'SHA256', '', payload returns a valid digest under an empty key and no empty-key...

CVE-2026-41896 Coolify: Unauthenticated Deployment Trigger via Webhook HMAC Bypass with Null Secret

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, the HMAC key is the application's manualwebhooksecretgithub field, which is used by Coolify's webhook endpoints to validate incoming requests, is nullable with no default —...

CVE-2026-41896 Coolify: Unauthenticated Deployment Trigger via Webhook HMAC Bypass with Null Secret

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, the HMAC key is the application's manualwebhooksecretgithub field, which is used by Coolify's webhook endpoints to validate incoming requests, is nullable with no default —...

CVE-2026-41896

CVE-2026-41896 affects Coolify prior to 4.0.0-beta.474. The HMAC key used to validate webhook requests (manual_webhook_secret_github) is nullable with no default, so new apps have a null secret. PHP’s hash_hmac() coerces a null key to an empty string, causing the server to compute hash_hmac('sha2...

CVE-2026-47123

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...