ROOT-OS-DEBIAN-12-CVE-2026-66035 CVE-2026-66035 in libssh2 - Patched by Root

Root has patched CVE-2026-66035 in the libssh2 package for Root:Debian:12. Multiple fixed versions available...

CVE-2026-66033

libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2ciphercrypt function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit...

Linux Distros Unpatched Vulnerability : CVE-2026-55200

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on...

DEBIAN-CVE-2026-55200

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

CVE-2026-55200 libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

CVE-2026-55200

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

CVE-2026-55200

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

EUVD-2026-37784

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

PT-2026-50528

Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.11.2 Description An out-of-bounds write issue exists in the ssh2 transport read function due to an integer overflow and a failure to enforce upper bounds on the packet length field. A remote attacker operating a...

CVE-2026-34084 PhpSpreadsheet SSRF and RCE via PHP stream wrappers in IOFactory::load

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load is user-controlled, an attacker can supply a PHP stream...

GHSA-Q4Q6-R8WH-5CGH PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled

The usage of isfile, used to verify if the $filename is indeed an actual file, by all? Reader implementations inside the helper function File::assertFile is php-wrapper aware, for any php wrappers implementing stat. The 3 wrappers ftp://, phar:// and ssh2.sftp://, all satisfy this requirement - 2...

PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled

The usage of isfile, used to verify if the $filename is indeed an actual file, by all? Reader implementations inside the helper function File::assertFile is php-wrapper aware, for any php wrappers implementing stat. The 3 wrappers ftp://, phar:// and ssh2.sftp://, all satisfy this requirement - 2...

PT-2026-37096

Name of the Vulnerable Software and Affected Versions PhpSpreadsheet versions prior to 1.30.3 PhpSpreadsheet versions 2.0.0 through 2.1.14 PhpSpreadsheet versions 2.2.0 through 2.4.3 PhpSpreadsheet versions 3.3.0 through 3.10.3 PhpSpreadsheet versions 4.0.0 through 5.5.0 Description When the...

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,...

EUVD-2026-21597

phpseclib has a variable-time HMAC comparison in SSH2::getbinarypacket using != instead of hashequals...

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,...

Updated trilead-ssh2 packages fix security vulnerabilities

CVE-2023-48795: Fixed prefix truncation breaking ssh channel integrity aka Terrapin Attack...

CVE-2025-70034

A flaw was found in ssh2. This vulnerability, categorized as CWE-1333 Inefficient Regular Expression Complexity, allows a remote attacker to cause a Denial of Service DoS by sending specially crafted input that triggers inefficient processing of regular expressions. This can lead to the affected...