CVE-2026-117469

File-transfer type confusion permits unauthorized repository writes in Psono Server

Published Oct 27, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the direction of file-transfer credentials on file-repository operations. An authenticated remote attacker with read-only access to a file could present a download transfer to the upload endpoint, obtain a signed upload URL for an attacker-selected object key, and append a chunk to the owner's file. Exploitation could upload or overwrite repository objects and consume storage, subject to transfer size, chunk-count, and lifetime limits.

Remediation

Vendor Solution

Upgrade to Psono Server 7.2.4 or later.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Esaqa
Esaqa psono
Vendors & Products Esaqa
Esaqa psono
Type Values Removed Values Added
Description Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the direction of file-transfer credentials on file-repository operations. An authenticated remote attacker with read-only access to a file could present a download transfer to the upload endpoint, obtain a signed upload URL for an attacker-selected object key, and append a chunk to the owner's file. Exploitation could upload or overwrite repository objects and consume storage, subject to transfer size, chunk-count, and lifetime limits.
Title File-transfer type confusion permits unauthorized repository writes in Psono Server
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
esaqa
Published
Updated
Nov 4, 2026, 3:01 PM
Reserved
Oct 27, 2026, 5:33 AM
Status
Deferred
Published
Oct 27, 2026, 6:17 AM
Modified
Nov 4, 2026, 3:17 PM