CVE-2026-11940
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
tarfile extraction filter bypass allows escaping the destination directory
tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory. This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
CPython
- Vendor
- Python Software Foundation
- Product
- CPython
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | python | 3.10.21 | Unavailable | None listed |
| 3.11.0 | affected | python | 3.11.16 | Unavailable | None listed |
| 3.12.0 | affected | python | 3.12.14 | Unavailable | None listed |
| 3.13.0 | affected | python | 3.13.15 | Unavailable | None listed |
| 3.14.0 | affected | python | 3.14.7 | Unavailable | None listed |
| 3.15.0a1 | affected | python | 3.15.0b4 | Unavailable | None listed |