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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| onionshare | onionshare | < 2.6.4 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | onionshare | 2.6.4-1 | — |
| Debian 13 | onionshare | 2.6.3-1+deb13u2 | — |
| Debian 12 | onionshare | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | onionshare | No fix yet | — |
| Ubuntu 24.04 LTS | onionshare | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | onionshare | No fix yet | — |
| Ubuntu Pro 20.04 LTS | onionshare | No fix yet | — |
| Ubuntu Pro 18.04 LTS | onionshare | No fix yet | — |
| Ubuntu Pro 16.04 LTS | onionshare | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-onionshare | 2.6.4-1.1 | openSUSE-SU-2026:11169-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | onionshare-cli | < 2.6.4 | 2.6.4 | GHSA-22p9-r2f5-22mf |
Advisories 1
- openSUSE-SU-2026:11169-1 python3-onionshare-2.6.4-1.1 on GA media SUSE / openSUSE Security Updates · Jul 2, 2026