CVE-2026-84483: Use of Hard-coded Cryptographic Key

WWBN AVideo through commit 9c39d8c8 contains an incomplete authentication bypass in encryptPass.json.php that allows unauthenticated attackers to compute valid HMAC tokens using the public site URL and current time. Attackers can forge authentication tokens by computing hashhmac with the site's...

Exploit for CVE-2026-76581

CVE-2026-76581 - WPMU DEV Dashboard Vulnerability Detector A...

CVE-2026-55678

Arc is an open, SQL-native time-series database for telemetry. From 26.02.1 until 26.06.2, Arc Enterprise clustering accepts cluster join requests without authentication when cluster.enabled is true but cluster.sharedsecret is not configured. The defaults in internal/config/config.go set...

EUVD-2026-66418

The vulnerability allows the unauthorised generation of physical access QR codes due to the use of hard-coded credentials within the application. The generation mechanism uses the 'badgenumber' parameter as the HMAC private key, the value of which remains static and is accessible via the API usin...

arc has unauthenticated cluster node admission when `cluster.shared_secret` is unset

Summary Arc Enterprise clustering accepts cluster join requests without authentication when cluster.enabled=true but cluster.sharedsecret is not configured. The coordinator validates HMAC authentication only if a shared secret is non-empty; otherwise, a network attacker who can reach the...

Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)

Summary Phalcon\Encryption\Crypt provides authenticated encryption: when useSigning is enabled the default, encrypt appends an HMAC tag and decrypt verifies it before returning the plaintext. The verification compares the attacker-supplied tag against the freshly computed HMAC using PHP/Zephir...

EUVD-2026-43097

Phalcon: Non-constant-time HMAC verification in Encryption\Crypt::decrypt timing side-channel...

GHSA-8JQH-95G6-7JPJ Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)

Summary Phalcon\Encryption\Crypt provides authenticated encryption: when useSigning is enabled the default, encrypt appends an HMAC tag and decrypt verifies it before returning the plaintext. The verification compares the attacker-supplied tag against the freshly computed HMAC using PHP/Zephir...

WordPress WPMU DEV Dashboard plugin <= 5.0.1 - Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion vulnerability

Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion vulnerability discovered by WordFence in WordPress Plugin WPMU DEV Dashboard versions = 5.0.1...

CVE-2026-76581

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...

EUVD-2026-67464

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...

CVE-2026-76581 WPMU DEV Dashboard <= 5.0.1 - Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...

CVE-2026-76581

CVE-2026-76581 is a Critical (CVSS 9.8) unauthenticated Authentication Bypass in the WPMU DEV Dashboard plugin for WordPress (≤ 5.0.1 , ~350,000 installs). The root cause is HMAC canonicalization confusion between two unauthenticated AJAX actions: wdpsso_step1 signs an unseparated concatenation o...

CVE-2026-76581: Improper Verification of Cryptographic Signature

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...

CVE-2026-81718

opensslencrypt versions before 1.4.9 use under-parameterized PBKDF2-HMAC-SHA256 with only 100,000 iterations to protect PQC keyfile private keys and 10,000 iterations for dual-encryption file-password verification. Attackers who obtain keyfiles or encrypted files can brute-force wrapping password...

PT-2026-82837

Name of the Vulnerable Software and Affected Versions WPMU DEV Dashboard versions prior to 5.0.2 Description An authentication bypass exists in the Hub Single Sign-On SSO flow, potentially affecting an estimated 350,000 WordPress sites. The issue stems from HMAC canonicalization confusion—a...

No Privileges, No Lockout, No Trace: Kerberoasting with SPN Misconfigurations

No Privileges, No Lockout, No Trace: Kerberoasting with SPN Misconfigurations By Maulik Maheta and Henry Bernabe · August 27, 2026 Executive Summary Active Directory misconfigurations are vulnerabilities that attackers can exploit before defenders notice them. This blog exposes a stealthier...

VulnCheck KEV: CVE-2026-76581

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...

No Privileges, No Lockout, No Trace: Kerberoasting with SPN Misconfigurations

No Privileges, No Lockout, No Trace: Kerberoasting with SPN Misconfigurations By Maulik Maheta and Henry Bernabe · August 27, 2026 Executive Summary Active Directory misconfigurations are vulnerabilities that attackers can exploit before defenders notice them. This blog exposes a stealthier...

CVE-2026-81718: Inadequate Encryption Strength

opensslencrypt versions before 1.4.9 use under-parameterized PBKDF2-HMAC-SHA256 with only 100,000 iterations to protect PQC keyfile private keys and 10,000 iterations for dual-encryption file-password verification. Attackers who obtain keyfiles or encrypted files can brute-force wrapping password...