proot-distro has a Container Isolation Bypass via Crafted Restore Archive
Priority HIGH 71CWE-668Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
proot-distro is a utility for managing proot containers. Prior to version 5.1.6, proot-distro restore accepted hardlink entries whose linkname referenced another installed container and did not verify that the hardlink source container matched the destination container being restored, allowing a crafted restore archive to copy files between otherwise isolated containers. This issue is fixed in version 5.1.6.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00188 8th percentileScored 2026-11-07
Fix Fixed proot-distro (termux): 5.1.6proot-distro (PyPI): 5.1.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| termux | proot-distro | before 5.1.6 | 5.1.6 | Patch available | CNA |
| — | proot-distro (PyPI) | before 5.1.6 | 5.1.6 | Patch available | GHSA-7h3g-4w2f-fj2f |
- proot-distro Vendortermux Affected before 5.1.6 Fixed in 5.1.6 Patch available CNA
- proot-distro (PyPI) Vendor— Affected before 5.1.6 Fixed in 5.1.6 Patch available GHSA-7h3g-4w2f-fj2f
Remediation
- Fix · CNA proot-distro (termux) Fixed in 5.1.6
- Fix · GHSA-7h3g-4w2f-fj2f proot-distro (PyPI) Fixed in 5.1.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54727
- 2026-10-03 Alias added: GHSA-7h3g-4w2f-fj2f
References
More termux vulnerabilities
- TI-2026-39409 `proot-distro install` has a Symlink Escape (Arbitrary Host File Write) via Malicious Tar Archive CVSS 3.1HIGH 8.2
Sources
- CVE-2026-54727 · CVE Program
- CVE-2026-54727 · NVD
- FIRST EPSS
- GHSA-7h3g-4w2f-fj2f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences