CVE-2026-117469
File-transfer type confusion permits unauthorized repository writes in Psono Server
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | esaqa gmbh |
| Product | psono |
| Published | Oct 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
esaqa GmbH / Psono
1.0.0 < 7.2.4
References
gitlab.com: https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117469.md gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/file_repository_upload.py gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/commit/64753b19bd8d03cfbed20db575f4dccb220d9ca4 gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4 gitlab.com: https://gitlab.com/esaqa/psono/psono-server
Credits
Ryan Chaplin