CVE-2026-12816

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-13586

In Bouncy Castle for Java before 1.85, PKCS12 MAC and bag-decryption KDF iteration-count bound DoS. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bc-fips 1.0.2.7 1.0.X series, 2.0.2 2.0.X series and 2.1.3 2.1.X series...

EUVD-2026-52140

In Bouncy Castle for Java before 1.85, PKCS12 MAC and bag-decryption KDF iteration-count bound DoS. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bc-fips 1.0.2.7 1.0.X series, 2.0.2 2.0.X series and 2.1.3 2.1.X series...

CVE-2026-12816

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. 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-2026-46318

When verifying a mac with a ChunkedMacVerification object, Tink compares the resulting tag with non constant time comparison. This potentially allows an attacker to use timinig information as a side channel in order to get information how many bytes of a given tag match the correct tag. This in...

JLSEC-2026-743 When `HAVE_ENCRYPT_THEN_MAC` is configured, the implementation could fall back to MAC-then-Encrypt...

When HAVEENCRYPTTHENMAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC...

Linux Distros Unpatched Vulnerability : CVE-2026-8720

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When...

CVE-2023-20572

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity...

CVE-2023-20540

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity...

EUVD-2026-39571

PKCS12 MAC verification uses an attacker-controlled comparison length, weakening the integrity check on the MAC and allowing a mismatched MAC to be accepted. The PKCS12 verify path compared the locally computed HMAC against the MAC parsed from the PKCS12 structure using a length taken directly fr...

CVE-2026-8720 HMAC-BLAKE2 final discards message when key length exceeds block size

wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When the supplied key is longer than the BLAKE2 block size the key-hashing branch reinitialized the running hash state, discarding the...

CVE-2026-6331

HMAC zero-length tag forgery in EVPDigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated...

PT-2026-52602

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description PKCS12 MAC verification uses a comparison length controlled by an attacker, which weakens the integrity check on the Message Authentication Code MAC and allows a...

PT-2026-52605

Name of the Vulnerable Software and Affected Versions wolfSSL version 5.9.0 Description The functions wc Blake2bHmacFinal and wc Blake2sHmacFinal discard the message when the key length exceeds the block size. This occurs because the key-hashing branch reinitializes the running hash state, which...

PT-2026-52604

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description An issue exists in the EVP DigestVerifyFinal function where a zero-length tag could be accepted as valid during HMAC Hash-based Message Authentication Code...

Oracle Linux 9 : dovecot (ELSA-2026-19364)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-19364 advisory. - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161640 - fix CVE-2025-59032: ManageSieve: Denial of Service via...

GHSA-34W5-C283-J9FG symfony/ux-live-component: LiveComponentHydrator HMAC checksum lacks component and slot binding

Description In symfony/ux-live-component, a component's server-side state is exposed to the browser as a set of props LiveProp-annotated properties. Props marked writable: true can be freely changed by the client. Read-only props are round-tripped to the browser and back, and their integrity is...

CVE-2026-34181

A flaw was found in OpenSSL. This vulnerability allows a remote attacker to forge PKCS12 Public-Key Cryptography Standards 12 files that use Password-Based Message Authentication Code 1 PBMAC1 with short HMAC Hash-based Message Authentication Code keys. This can lead to a service accepting...

SUSE CVE-2026-46291

In the Linux kernel, the following vulnerability has been resolved: crypto: caam - guard HMAC key hex dumps in hashdigestkey Use printhexdumpdevel for dumping sensitive HMAC key bytes in hashdigestkey to avoid leaking secrets at runtime when CONFIGDYNAMICDEBUG is enabled...