phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()

phpseclib SSH2: Variable-time comparison in HMAC verification Summary phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp, which short-circuits on the first differi...

CVE-2026-40194

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

CVE-2026-40194 phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

CVE-2026-40194 phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

CVE-2026-40194

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

CVE-2026-40194

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

CVE-2026-40194 phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp,...

phpseclib 安全漏洞

phpseclib is an open-source PHP security communication library developed by phpseclib. Versions prior to 3.0.51, 2.0.53, and 1.0.28 have security vulnerabilities. These vulnerabilities stem from the use of the PHP “!” operator in phpseclib’s NetSSH2::getbinarypacket function, which compares the...

PT-2026-32042

Name of the Vulnerable Software and Affected Versions: phpseclib versions 1.0 through 3.0.50 Description: phpseclib versions prior to 3.0.51, 2.0.53, and 1.0.28 have a timing issue in the phpseclibNetSSH2::get binary packet function. The use of PHP's != operator for comparing SSH packet HMACs...

RockyLinux 9 : nodejs:24 (RLSA-2026:7350)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:7350 advisory. nodejs: Nodejs denial of service CVE-2026-21637 brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion CVE-2026-25547...

SUSE-SU-2026:21064-1 Security update for libtpms

This update for libtpms fixes the following issues: - CVE-2025-49133: out-of-bounds OOB access due to HMAC signing issue leads to abort and vTPM DoS bsc1244528...

grav-cms-filecache-object-injection

Grav CMS FileCache Object Injection Description The File...

Exploit for CVE-2026-39324

CVE-2026-39324 Rack::Session::Cookie decrypt failure falls...

ROS-20260407-73-0040

A vulnerability in the net/ipv6/seg6hmac.c component of the Linux operating system kernel is associated with information leakage based on timing discrepancies. Exploitation of the vulnerability allows an attacker to cause a denial of service...

BIT-NODE-MIN-2026-21713

A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior...

BIT-NODE-2026-21713

A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior...

GHSA-VFGX-5Q85-58Q3 openssl-encrypt has non-cryptographic PRNG used for steganography pixel selection

Summary The generatepseudorandomsequence function in opensslencrypt/plugins/steganography/core/utils.py at lines 89-91 uses Python's random module Mersenne Twister for steganographic pixel/sample selection. Affected Code python random.seedseed sequence = random.samplerangemaxvalue, minlength,...

openssl-encrypt has non-cryptographic PRNG used for steganography pixel selection

Summary The generatepseudorandomsequence function in opensslencrypt/plugins/steganography/core/utils.py at lines 89-91 uses Python's random module Mersenne Twister for steganographic pixel/sample selection. Affected Code python random.seedseed sequence = random.samplerangemaxvalue, minlength,...

CVE-2026-21713

A flaw was found in Node.js. The HMAC Hash-based Message Authentication Code verification process uses a comparison method that does not take a constant amount of time. This non-constant-time comparison can leak timing information, which, under specific conditions where precise timing measurement...

EUVD-2026-17174

A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior...