CVE-2026-59995: sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.

mediumCVSS 4.2CVE-2026-59995

sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 4.2
Published: 2026-07-08
Last updated: 2026-07-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-59995

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-599950.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59995	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

mediumCVE-2026-59995: sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when …msrc

Recent advisories for sftp in OpenSSH

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-59997: internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line argument…nvd · 2026-07-08
mediumCVE-2026-59995: sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when …msrc · 2026-07-02
mediumCVE-2026-59997: internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line argument…msrc · 2026-07-02