Symlink following in Bastille jail copy commands allows jail escape
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Bastille through 1.4.4 contains a symlink following flaw in its cp.sh, rcp.sh and jcp.sh subcommands that lets jailed users escape jail isolation (CWE-59). A local user inside a jail with low privileges can plant symlinks that point to host paths or other jail roots. When an administrator runs a copy, the command overwrites or reads host files with root privileges.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Description from the CNA
Bastille through 1.4.4 contains a symlink following vulnerability in the cp.sh, rcp.sh and jcp.sh subcommands that allows jailed users to escape jail isolation. Attackers inside a jail can plant symlinks pointing to host paths or other jail roots, so administrator-run copies overwrite or read host files with root privileges.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| BastilleBSD | bastille | up to 1.4.4 | — | No fix listed | CNA |
- bastille VendorBastilleBSD Affected up to 1.4.4 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for bastille.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Timeline
- 2026-10-30 Threatist record created from CVE-2026-119704
- 2026-10-30 Alias added: GHSA-wrmv-w7w7-jxc9
- 2026-11-05 CISA SSVC decision points changed
References
Sources
- CVE-2026-119704 · CVE Program
- CVE-2026-119704 · NVD
- FIRST EPSS
- GHSA-wrmv-w7w7-jxc9 · GitHub Advisory Database · CC BY 4.0
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