CVE-2026-62325Public exploitNetwork attack vector

Unauthenticated file access via omitted SFTP handler

Published Jul 28, 2026 · Updated Jul 28, 2026

Missing authentication in goshs 2.1.3 allows remote attackers to read, write, delete, or rename files through SFTP. In sftpserver/sftpserver.go, an AND condition installs the password handler only when both credential fields are nonempty, leaving it unset when the password is empty. The bypass requires SFTP mode with basic authentication set to a username and empty password and no public-key file, after which the server accepts unauthenticated sessions.

CVSS severity9.1
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in goshs 2.1.3 allows remote attackers to read, write, delete, or rename files through SFTP. In sftpserver/sftpserver.go, an AND condition installs the password handler only when both credential fields are nonempty, leaving it unset when the password is empty. The bypass requires SFTP mode with basic authentication set to a username and empty password and no public-key file, after which the server accepts unauthenticated sessions.

The record

CVE
CVE-2026-62325
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
Patrick Hener
Product
goshs
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.1.3, < 2.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Patrick Hener · goshsversion=>= 2.1.3, < 2.1.4

Published CVSS scores

9.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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