Stack-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the construction of the longname field during SFTP server directory listing. An attacker can cause a crash or execute arbitrary code on the server by supplying specially crafted, excessively long filenames...

CVE-2026-59844: Memory Allocation with Excessive Size Value

A flaw was found in libssh. A remote authenticated client can issue SSHFXPREAD requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests...

CVE-2026-59848: Allocation of Resources Without Limits or Throttling

A flaw was found in libssh. A malicious SFTP server can send responses for unknown request IDs that libssh clients keep queued indefinitely, causing unbounded memory growth and client-side denial of service...

CVE-2026-15370: Stack-based Buffer Overflow

A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead ...

PT-2026-61847

Name of the Vulnerable Software and Affected Versions libssh affected versions not specified Description A flaw exists in libssh during SFTP server directory listing. The longname field is constructed using unsafe concatenation into a fixed-size stack buffer. An attacker can trigger a stack buffe...

CVE-2026-13380

VSee Clinic 7.1.26 and VSee Clinic API 1.3.0 exposes cleartext SFTP credentials in the HTTP responses of three unauthenticated endpoints. The credentials are present in these responses only when SFTP connections have been configured within the application. No authentication is required to retriev...

CVE-2026-13380 VSee Clinic and API Exposes Cleartext SFTP Credentials in Unauthenticated HTTP Responses

VSee Clinic 7.1.26 and VSee Clinic API 1.3.0 exposes cleartext SFTP credentials in the HTTP responses of three unauthenticated endpoints. The credentials are present in these responses only when SFTP connections have been configured within the application. No authentication is required to retriev...

Updated libssh2 packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Heap Buffer Over-read via sftpsymlink in sftp.c. CVE-2025-15661 libssh2 userauth.c userauthpassword integer overflow. CVE-2026-7598 Pre-Authentication DoS via SSHMSGEXTINFO Handler. CVE-2026-55199 Out-of-Bounds Write via Unchecked packetlength in...

MGASA-2026-0273 Updated libssh2 packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Heap Buffer Over-read via sftpsymlink in sftp.c. CVE-2025-15661 libssh2 userauth.c userauthpassword integer overflow. CVE-2026-7598 Pre-Authentication DoS via SSHMSGEXTINFO Handler. CVE-2026-55199 Out-of-Bounds Write via Unchecked packetlength in...

CVE-2026-63090

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

EUVD-2026-45961

ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091

ProFTPD mod_sftp in versions before 1.3.9c and 1.3.10rc3 contains a signed integer overflow in the SCP size-record parser. An authenticated, low-privilege attacker can send a crafted file size (UINT64_MAX) to produce a negative off_t, convert to uint32_t, and trigger ~4 GB read length, causing th...

CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091

ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

EUVD-2026-45960

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090 ProFTPD mod_sftp Heap Buffer Overflow via SFTP Packet Reassembly

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...