| Name | CVE-2025-4138 |
| Description | Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| jython (PTS) | bullseye | 2.7.2+repack1-3 | fixed |
| trixie, bookworm, sid | 2.7.3+repack1-1 | fixed | |
| python2.7 (PTS) | bullseye | 2.7.18-8+deb11u1 | fixed |
| python3.11 (PTS) | bookworm | 3.11.2-6+deb12u6 | fixed |
| bookworm (security) | 3.11.2-6+deb12u3 | fixed | |
| python3.12 (PTS) | sid | 3.12.10-1 | vulnerable |
| python3.13 (PTS) | trixie | 3.13.3-2 | vulnerable |
| sid | 3.13.4-1 | fixed | |
| python3.9 (PTS) | bullseye | 3.9.2-1 | fixed |
| bullseye (security) | 3.9.2-1+deb11u3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| jython | source | (unstable) | (not affected) | |||
| python2.7 | source | (unstable) | (not affected) | |||
| python3.11 | source | bookworm | (not affected) | |||
| python3.11 | source | (unstable) | (unfixed) | |||
| python3.12 | source | (unstable) | (unfixed) | |||
| python3.13 | source | (unstable) | 3.13.4-1 | |||
| python3.9 | source | (unstable) | (not affected) |
[bookworm] - python3.11 <not-affected> (Vulnerable code didn't get backported to the version in Bookworm)
- python3.9 <not-affected> (Vulnerable code got backported to 3.9.17, but dropped from sid with 3.9.13)
- python2.7 <not-affected> (Vulnerable code introduced in 3.12)
- jython <not-affected> (Vulnerable code introduced in 3.12)
https://github.com/python/cpython/issues/135034
https://github.com/python/cpython/pull/135037
https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/
Fixed by: https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a (main)
Fixed by: https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a (3.14)
Fixed by: https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01 (v3.13.4)
Fixed by: https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da (v3.12.11)
Got backported to 3.9 in https://github.com/python/cpython/commit/98016f7c92aa4c1232c68bac1ed6646db31782ec (v3.9.17)
Got backported to 3.11 in https://github.com/python/cpython/commit/241f2e54a6a2801a1d2022f0fa56309e124866c3 (v3.11.4)