https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 01:01:19 +0000 https://cve.radiocsirt.org/vuln/bdu:2026-14976 bdu:2026-14976 https://cve.radiocsirt.org/vuln/bdu:2026-14976 https://cve.radiocsirt.org/vuln/bell-cve-2026-55199 <p><strong>Affected:</strong> Alpaquita:23: libssh2, Alpaquita:25: libssh2, Alpaquita:stream: libssh2, Alpaquita:stream: rust</p> <p><strong>Affected:</strong> Alpaquita:23: libssh2, Alpaquita:25: libssh2, Alpaquita:stream: libssh2, Alpaquita:stream: rust</p> https://cve.radiocsirt.org/vuln/bell-cve-2026-55199 https://cve.radiocsirt.org/vuln/brew-libssh2-cve-2026-55199 <p><strong>Affected:</strong> Homebrew: libssh2</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> <p><strong>Affected:</strong> Homebrew: libssh2</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> https://cve.radiocsirt.org/vuln/brew-libssh2-cve-2026-55199 https://cve.radiocsirt.org/vuln/certfr-2026-avi-0841 certfr-2026-avi-0841 https://cve.radiocsirt.org/vuln/certfr-2026-avi-0841 https://cve.radiocsirt.org/vuln/euvd-2026-336903 EUVD-2026-336903 https://cve.radiocsirt.org/vuln/euvd-2026-336903 https://cve.radiocsirt.org/vuln/fkie_cve-2026-55199 <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-55199 https://cve.radiocsirt.org/vuln/ghsa-3cfq-4xx4-rmpg <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> https://cve.radiocsirt.org/vuln/ghsa-3cfq-4xx4-rmpg https://cve.radiocsirt.org/vuln/msrc_cve-2026-55199 msrc_CVE-2026-55199 https://cve.radiocsirt.org/vuln/msrc_cve-2026-55199 https://cve.radiocsirt.org/vuln/ncsc-2026-0210 NCSC-2026-0210 https://cve.radiocsirt.org/vuln/ncsc-2026-0210 https://cve.radiocsirt.org/vuln/oesa-2026-3014 <p><strong>Affected:</strong> openEuler:22.03-LTS-SP4: libssh2</p> <p>libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25), SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*, SECSH-DHGEX(04), and SECSH-NUMBERS(10). Security Fix(es):</p> <p>libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds heap read vulnerability in the sftp_symlink() function in src/sftp.c that allows a malicious SSH server or man-in-the-middle attacker to disclose heap memory contents or cause a crash by sending a crafted SSH_FXP_NAME response. Attackers can supply a link_len value larger than the actual packet data in SSH_FXP_NAME responses for SFTP READLINK and REALPATH operations, triggering a heap buffer over-read of up to target_len minus one bytes due to the missing validation of available packet buffer size before the memcpy operation.(CVE-2025-15661)</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.(CVE-2026-55199)</p> <p><strong>Affected:</strong> openEuler:22.03-LTS-SP4: libssh2</p> <p>libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25), SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*, SECSH-DHGEX(04), and SECSH-NUMBERS(10). Security Fix(es):</p> <p>libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds heap read vulnerability in the sftp_symlink() function in src/sftp.c that allows a malicious SSH server or man-in-the-middle attacker to disclose heap memory contents or cause a crash by sending a crafted SSH_FXP_NAME response. Attackers can supply a link_len value larger than the actual packet data in SSH_FXP_NAME responses for SFTP READLINK and REALPATH operations, triggering a heap buffer over-read of up to target_len minus one bytes due to the missing validation of available packet buffer size before the memcpy operation.(CVE-2025-15661)</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.(CVE-2026-55199)</p> https://cve.radiocsirt.org/vuln/oesa-2026-3014 https://cve.radiocsirt.org/vuln/opensuse-su-2026:11109-1 <p>libssh2-1-1.11.1-3.1 on GA media</p> <p>libssh2-1-1.11.1-3.1 on GA media</p> https://cve.radiocsirt.org/vuln/opensuse-su-2026:11109-1 https://cve.radiocsirt.org/vuln/rhsa-2026:29950 <p>libssh2: libssh2: Denial of Service via crafted SSH_MSG_EXT_INFO message libssh2: libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c</p> <p>libssh2: libssh2: Denial of Service via crafted SSH_MSG_EXT_INFO message libssh2: libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c</p> https://cve.radiocsirt.org/vuln/rhsa-2026:29950 https://cve.radiocsirt.org/vuln/suse-su-2026:22284-1 <p>Security update for libssh2_org</p> <p>Security update for libssh2_org</p> https://cve.radiocsirt.org/vuln/suse-su-2026:22284-1 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-55199 <p><strong>Affected:</strong> Ubuntu:24.04:LTS: libssh2, Ubuntu:25.10: libssh2, Ubuntu:26.04:LTS: libssh2</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> <p><strong>Affected:</strong> Ubuntu:24.04:LTS: libssh2, Ubuntu:25.10: libssh2, Ubuntu:26.04:LTS: libssh2</p> <p>libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-55199 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1996 <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libssh2 ausnutzen, um einen Denial of Service Angriff durchzuführen oder Code auszuführen.</p> <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libssh2 ausnutzen, um einen Denial of Service Angriff durchzuführen oder Code auszuführen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1996