Vulnerability · Published Jun 3, 2025 · Assigned by PSF

CVE-2025-4435Tarfile extracts filtered members when errorlevel=0

High 7.5

In plain English

A high-severity security flaw in CPython from Python Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 50.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8platform-python3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:8platform-python-debug3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:8platform-python-devel3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:10python-unversioned-command3.12.9-2.el10_0.2ALSA-2025:10140
AlmaLinux:9python-unversioned-command3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:9python33.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:9python3-debug3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:9python3-devel3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:8python3-idle3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:9python3-idle3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:8python3-libs3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:9python3-libs3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:8python3-test3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:9python3-test3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:8python3-tkinter3.6.8-70.el8_10.alma.1ALSA-2025:10128
AlmaLinux:9python3-tkinter3.9.21-2.el9_6.1ALSA-2025:10136
AlmaLinux:8python3.113.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.113.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-debug3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-debug3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-devel3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-devel3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-idle3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-idle3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-libs3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-libs3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-rpm-macros3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:8python3.11-test3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-test3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.11-tkinter3.11.13-1.el8_10ALSA-2025:10026
AlmaLinux:9python3.11-tkinter3.11.11-2.el9_6.1ALSA-2025:10148
AlmaLinux:8python3.123.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.123.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-debug3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-debug3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-devel3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-devel3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-idle3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-idle3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-libs3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-libs3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-rpm-macros3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:8python3.12-test3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-test3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python3.12-tkinter3.12.11-1.el8_10ALSA-2025:10031
AlmaLinux:9python3.12-tkinter3.12.9-1.el9_6.1ALSA-2025:10189
AlmaLinux:8python393.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-Cython0.29.21-5.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-Cython0.29.21-5.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-PyMySQL0.10.1-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-attrs20.3.0-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-cffi1.14.3-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-cffi1.14.3-2.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-chardet3.0.4-19.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-cryptography3.3.1-3.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-debug3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-devel3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-idle3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-idna2.10-4.module_el8.10.0+3849+a48d89aaALSA-2025:23530
AlmaLinux:8python39-iniconfig1.1.1-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-libs3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-lxml4.6.5-1.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-lxml4.6.5-1.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-mod_wsgi4.7.1-7.module_el8.10.0+3989+a618fe15.1ALSA-2025:23530
AlmaLinux:8python39-more-itertools8.5.0-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-numpy1.19.4-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-numpy1.19.4-3.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-numpy-doc1.19.4-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-numpy-f2py1.19.4-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-numpy-f2py1.19.4-3.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-packaging20.4-4.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pip20.2.4-9.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-pip-wheel20.2.4-9.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-pluggy0.13.1-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-ply3.11-10.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-psutil5.8.0-4.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-psutil5.8.0-4.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-psycopg22.8.6-3.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-psycopg2-doc2.8.6-3.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-psycopg2-tests2.8.6-3.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-py1.10.0-1.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pybind112.7.1-1.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pybind112.7.1-1.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-pybind11-devel2.7.1-1.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-pybind11-devel2.7.1-1.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pycparser2.20-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pyparsing2.4.7-5.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pysocks1.7.1-4.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pytest6.0.2-2.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pyyaml5.4.1-1.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-pyyaml5.4.1-1.module_el8.6.0+3248+c431e88cALSA-2025:23530
AlmaLinux:8python39-requests2.25.0-3.module_el8.9.0+3634+fb2a896cALSA-2025:23530
AlmaLinux:8python39-rpm-macros3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-scipy1.5.4-5.module_el8.9.0+3634+fb2a896cALSA-2025:23530
AlmaLinux:8python39-setuptools50.3.2-7.module_el8.10.0+4040+9207bbc0ALSA-2025:23530
AlmaLinux:8python39-setuptools-wheel50.3.2-7.module_el8.10.0+4040+9207bbc0ALSA-2025:23530
AlmaLinux:8python39-six1.15.0-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-test3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-tkinter3.9.25-2.module_el8.10.0+4083+53cad1fbALSA-2025:23530
AlmaLinux:8python39-toml0.10.1-5.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-urllib31.25.10-5.module_el8.10.0+3765+2f9a457dALSA-2025:23530
AlmaLinux:8python39-wcwidth0.2.5-3.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-wheel1:0.35.1-4.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
AlmaLinux:8python39-wheel-wheel1:0.35.1-4.module_el8.6.0+2780+a40f65e1ALSA-2025:23530
Debian:13pypy3no fix listedDEBIAN-CVE-2025-4435
Debian:14pypy37.3.20+dfsg-2DEBIAN-CVE-2025-4435
Debian:13python3.133.13.4-1DEBIAN-CVE-2025-4435
Rocky Linux:8Cython0:0.29.21-5.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8Cython0:0.29.21-5.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8PyYAML0:5.4.1-1.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8PyYAML0:5.4.1-1.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8PyYAML0:5.4.1-1.module+el8.9.0+1418+f0d66789RLSA-2025:23530
Rocky Linux:8mod_wsgi0:4.7.1-7.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8mod_wsgi0:4.7.1-7.module+el8.10.0+1978+d4f111ba.1RLSA-2025:23530
Rocky Linux:8mod_wsgi0:4.7.1-7.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8numpy0:1.19.4-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8numpy0:1.19.4-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8pybind110:2.7.1-1.module+el8.9.0+1357+a3b80af7RLSA-2025:23530
Rocky Linux:8pytest0:6.0.2-2.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8pytest0:6.0.2-2.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-PyMySQL0:0.10.1-2.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-PyMySQL0:0.10.1-2.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-PyMySQL0:0.10.1-2.module+el8.10.0+1910+234ad790RLSA-2025:23530
Rocky Linux:8python-PyMySQL0:0.10.1-2.module+el8.10.0+1592+61442852RLSA-2025:23530
Rocky Linux:8python-attrs0:20.3.0-2.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-attrs0:20.3.0-2.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-cffi0:1.14.3-2.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-cffi0:1.14.3-2.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-chardet0:3.0.4-19.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-chardet0:3.0.4-19.module+el8.9.0+1418+f0d66789RLSA-2025:23530
Rocky Linux:8python-chardet0:3.0.4-19.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-cryptography0:3.3.1-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-cryptography0:3.3.1-3.module+el8.10.0+1697+7e517775RLSA-2025:23530
Rocky Linux:8python-idna0:2.10-4.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-idna0:2.10-4.module+el8.10.0+1809+41195054RLSA-2025:23530
Rocky Linux:8python-iniconfig0:1.1.1-2.module+el8.9.0+1332+dd574197RLSA-2025:23530
Rocky Linux:8python-lxml0:4.6.5-1.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-more-itertools0:8.5.0-2.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-more-itertools0:8.5.0-2.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-packaging0:20.4-4.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-packaging0:20.4-4.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-pluggy0:0.13.1-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-pluggy0:0.13.1-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-ply0:3.11-10.module+el8.9.0+1418+f0d66789RLSA-2025:23530
Rocky Linux:8python-ply0:3.11-10.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-ply0:3.11-10.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-psutil0:5.8.0-4.module+el8.9.0+1357+a3b80af7RLSA-2025:23530
Rocky Linux:8python-psycopg20:2.8.6-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-psycopg20:2.8.6-3.module+el8.10.0+1660+b5b6f004RLSA-2025:23530
Rocky Linux:8python-py0:1.10.0-1.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-py0:1.10.0-1.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-pycparser0:2.20-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-pycparser0:2.20-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-pysocks0:1.7.1-4.module+el8.9.0+1418+f0d66789RLSA-2025:23530
Rocky Linux:8python-pysocks0:1.7.1-4.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-pysocks0:1.7.1-4.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-requests0:2.25.0-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-requests0:2.25.0-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-toml0:0.10.1-5.module+el8.9.0+1332+dd574197RLSA-2025:23530
Rocky Linux:8python-urllib30:1.25.10-5.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-urllib30:1.25.10-5.module+el8.10.0+1545+03246da9RLSA-2025:23530
Rocky Linux:8python-wcwidth0:0.2.5-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python-wcwidth0:0.2.5-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-wheel1:0.35.1-4.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python-wheel1:0.35.1-4.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python30:3.6.8-70.el8_10.rocky.0RLSA-2025:10128
Rocky Linux:8python3.110:3.11.13-1.el8_10RLSA-2025:10026
Rocky Linux:9python3.110:3.11.11-2.el9_6.1RLSA-2025:10148
Rocky Linux:10python3.120:3.12.9-2.el10_0.2RLSA-2025:10140
Rocky Linux:8python3.120:3.12.11-1.el8_10RLSA-2025:10031
Rocky Linux:9python3.120:3.12.9-1.el9_6.1RLSA-2025:10189
Rocky Linux:9python3.90:3.9.21-2.el9_6.1RLSA-2025:10136
Rocky Linux:8python3x-pip0:20.2.4-9.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python3x-pip0:20.2.4-9.module+el8.10.0+1721+e52d6351RLSA-2025:23530
Rocky Linux:8python3x-pyparsing0:2.4.7-5.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python3x-pyparsing0:2.4.7-5.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8python3x-setuptools0:50.3.2-7.module+el8.10.0+2057+30213a2bRLSA-2025:23530
Rocky Linux:8python3x-six0:1.15.0-3.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Rocky Linux:8python3x-six0:1.15.0-3.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8scipy0:1.5.4-5.module+el8.10.0+1582+bc278001RLSA-2025:23530
Rocky Linux:8scipy0:1.5.4-5.module+el8.10.0+1860+afcc1c71RLSA-2025:23530
Ubuntu:24.04:LTSpython3.123.12.3-1ubuntu0.7UBUNTU-CVE-2025-4435
Ubuntu:24.04:LTSpython3.123.12.3-1ubuntu0.7USN-7583-1
Ubuntu:25.10python3.143.14.0-1UBUNTU-CVE-2025-4435

Affected products (as reported)

VendorProductVersions
Python Software Foundation CPython 0 – before 3.9.233.10.0 – before 3.10.183.11.0 – before 3.11.133.12.0 – before 3.12.113.13.0 – before 3.13.43.14.0a1 – before 3.14.0b3

Weakness: CWE-682 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References