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...

CVE-2026-56285 Nitter - Server-Side Request Forgery in /video Media Proxy Endpoint

Nitter's /video media proxy endpoint fails to validate target URLs against Twitter/X domains and uses a hardcoded default HMAC key, allowing unauthenticated attackers to compute valid HMACs for arbitrary URLs. Attackers can retrieve HTTP responses from any host reachable by the server, including...

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...

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-2023-20572

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-2023-20572

CVE-2023-20572 describes a timing discrepancy in the ASP that could enable a local attacker to brute-force the hash message authentication code, risking data integrity. The connected AMD bulletin AMD-SB-4012 references potential vulnerabilities on AMD Client Processor platforms affecting ASP and ...

EUVD-2023-60598

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

CVE-2023-20540 describes a timing discrepancy in the AMD Secure Processor (ASP) that could enable a privileged attacker to brute-force the hash-based MAC, potentially compromising data integrity. Affected component: AMD Secure Processor / ASP in AMD client/server platforms using ASP. Root cause: ...

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-2023-60597

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...

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...

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...

CVE-2026-5477

An integer overflow existed in the wolfCrypt CMAC implementation, that could be exploited to forge CMAC tags. The function wcCmacUpdate used the guard if cmac-totalSz != 0 to skip XOR-chaining on the first block where digest is all-zeros and the XOR is a no-op. However, totalSz is word32 and wrap...

EUVD-2026-32959

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.9.5, deterministic AES-192-CBC with a fixed zero IV, constant KDF salt, and no MAC leads to confidentiality and integrity failures for synced bookmark/profile data. Attackers can crack common...

Security update for postgresql14

This update for postgresql14 fixes the following issues Security issues: CVE-2026-6472: ensure the user has CREATE privilege on the schema specified bsc1265172. CVE-2026-6473: integer overflows in memory-allocation calculations bsc1265173. CVE-2026-6474: Guard against malicious time zone names...

aiosend: Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler

Vulnerability Description In aiosend/webhook/base.py, the WebhookHandler.feedupdate method performs full deserialization of the incoming JSON via Pydantic before verifying the HMAC signature. Anyone can send a request with an arbitrary body — the server will parse it, spend CPU and memory, and on...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: The comparison of MACs has been fixed to be at constant time. To prevent timing attacks, MACs need to be compared at constant time. Use the appropriate helper functions for this purpose...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be performed in constant time. Replace the memcmp function with the correct function, cryptomemneq...

CVE-2026-43384

A flaw was found in the Linux kernel's TCP Authentication Option TCP-AO implementation. This vulnerability arises from a non-constant-time comparison of Message Authentication Codes MACs. A remote attacker could potentially exploit this timing discrepancy to perform a timing attack, which may lea...