CVE-2026-12803

CVE-2026-12803 affects Bouncy Castle for Java prior to 1.85 (and Java LTS prior to 2.73.12). KCCMBlockCipher MAC fails to bind nonce when AAD is absent, enabling cross-nonce AEAD forgery. Impacts confidentiality and integrity as described; CVSS v4.0 base score 8.7 (HIGH). Remediation: upgrade to ...

CVE-2026-12803 KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery)

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12803

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

EUVD-2026-52134

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12803 KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery)

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12803

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12803 KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery)

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

PT-2026-67090

Name of the Vulnerable Software and Affected Versions The Contest Gallery WordPress plugin versions prior to 30.0.7 Description Insufficient per-object capability and nonce checks in a post-deletion handler allow users with Author-level permissions or higher to permanently delete arbitrary posts,...

Linux Distros Unpatched Vulnerability : CVE-2026-12803

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross- nonce AEAD forgery. This issue also affects Bouncy Cast...

CVE-2026-12803: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent cross-nonce AEAD forgery. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

PT-2026-67016

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Description The KCCMBlockCipher MAC does not bind the nonce when Additional Authenticated Data AAD is absent, which allows for cross-nonce AEAD...

PT-2026-76180

Issue summary: When an application drives an AES-OCB context through the public EVP Cipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

CVE-2026-16292

The Frontend File Manager Plugin WordPress plugin through 23.6 does not perform nonce validation on one of its file-metadata update actions, allowing an attacker to modify the metadata of a logged-in user's uploaded file via a CSRF attack, which can be leveraged to download that file. When guest...

CVE-2026-12586

The Lenxel WP WordPress theme through 1.0.31 does not perform any authorization or ownership check on its password-reset action, validating only a CSRF nonce, allowing unauthenticated attackers to reset the password of any user including an administrator and take over the account...

CVE-2026-16292

The Frontend File Manager Plugin for WordPress (versions through 23.6 ) contains a vulnerability where it fails to perform nonce validation on specific file-metadata update actions. This oversight allows an attacker to perform a Cross-Site Request Forgery (CSRF) attack to modify the metadata of a...

EUVD-2026-51939

The Clever Mega Menu for Visual Composer WordPress plugin through 1.0.1 does not perform a nonce or capability check in an AJAX action that updates navigation menu item metadata, allowing any authenticated user, including Subscribers, to overwrite menu item content and settings that are rendered ...

CVE-2026-15385

The RT Mega Menu WordPress plugin (versions before 1.5.2 ) is vulnerable to Stored XSS due to a lack of capability checks on an AJAX action used to save mega-menu configurations and per-menu-item settings. While a nonce is present, it is accessible to any logged-in user. A user with subscriber-le...

CVE-2026-11872

The Clever Mega Menu for Visual Composer WordPress plugin through 1.0.1 does not perform a nonce or capability check in an AJAX action that updates navigation menu item metadata, allowing any authenticated user, including Subscribers, to overwrite menu item content and settings that are rendered ...

CVE-2026-15385

The RT Mega Menu WordPress plugin before 1.5.2 does not perform a capability check on the AJAX action that saves mega-menu configuration and per-menu-item settings; its only gate is a nonce that any logged-in user can read from a standard admin page. A subscriber-level user can therefore enable t...

CVE-2026-11872 Clever Mega Menu for Visual Composer <= 1.0.1 - Subscriber+ Menu Item Meta Update via save_clever_menu_item

The Clever Mega Menu for Visual Composer WordPress plugin through 1.0.1 does not perform a nonce or capability check in an AJAX action that updates navigation menu item metadata, allowing any authenticated user, including Subscribers, to overwrite menu item content and settings that are rendered ...