CVE-2026-3731
MEDIUM EPSS 45.7%
Published Mar 8, 20263mo ago · Modified Jun 17, 20261w ago
6.9 CVSS 4.0
Published Mar 8, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
Description
A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
45.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 2
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-125 Out-of-bounds Read Memory Safety
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| libssh | libssh | * | ≤0.11.3 |
References 6
- gitlab.com https://gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60
- vuldb.com https://vuldb.com/?ctiid.349709
- vuldb.com https://vuldb.com/?id.349709
- vuldb.com https://vuldb.com/?submit.767120
- libssh.org https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz
- libssh.org https://www.libssh.org/security/advisories/libssh-2026-sftp-extensions.txt
Remediation
- gitlab.com https://gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60
- libssh.org https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz