CVE-2026-87910

EUVD-2026-76162
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
PSFCNA
5.7 MEDIUM
NETWORK
LOW
LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Base Score
CVSS 3.x
EPSS Score
Percentile: 48.96%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
pythoncpython
𝑥
< 3.10.22
CNA
pythoncpython
3.11.0 ≤
𝑥
< 3.11.17
CNA
pythoncpython
3.12.0 ≤
𝑥
< 3.12.15
CNA
pythoncpython
3.13.0 ≤
𝑥
< 3.13.16
CNA
pythoncpython
3.14.0 ≤
𝑥
< 3.14.9
CNA
Debian logo
Debian Releases
Debian Product
Codename
pypy3
bookworm
7.3.11+dfsg-2+deb12u3
fixed
forky
vulnerable
sid
vulnerable
trixie
no-dsa
python3.11
bookworm
3.11.2-6+deb12u8
fixed
bookworm (security)
3.11.2-6+deb12u9
fixed
python3.13
forky
vulnerable
sid
vulnerable
trixie
no-dsa
python3.14
forky
vulnerable
sid
vulnerable
python3.15
forky
3.15.0-1
fixed
sid
3.15.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pypy3
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
python2.7
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
dne
resolute
dne
trusty
needs-triage
xenial
needs-triage
python3.4
jammy
dne
noble
dne
resolute
dne
trusty
needs-triage
python3.5
jammy
dne
noble
dne
resolute
dne
trusty
needs-triage
xenial
needs-triage
python3.6
bionic
needs-triage
jammy
dne
noble
dne
resolute
dne
python3.7
bionic
needs-triage
jammy
dne
noble
dne
resolute
dne
python3.8
bionic
needs-triage
focal
needs-triage
jammy
dne
noble
dne
resolute
dne
python3.9
focal
needs-triage
jammy
dne
noble
dne
resolute
dne
python3.10
jammy
needs-triage
noble
dne
resolute
dne
python3.11
jammy
needs-triage
noble
dne
resolute
dne
python3.12
jammy
dne
noble
needs-triage
resolute
dne
python3.14
jammy
dne
noble
dne
resolute
needs-triage
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libpython3_6m1_0
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-base
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-curses
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-dbm
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-devel
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-idle
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-testsuite
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-tk
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
python36-tools
suse enterprise server 12 SP3
3.6.15-6.171.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
python3.11
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-debug
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-debuginfo
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-debugsource
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-devel
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-idle
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-libs
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-test
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.11-tkinter
Amazon Linux 2023
0:3.11.17-1.amzn2023.0.1
fixed
python3.12
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-debug
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-debuginfo
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-debugsource
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-devel
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-idle
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-libs
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-test
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.12-tkinter
Amazon Linux 2023
0:3.12.15-2.amzn2023.0.1
fixed
python3.13
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-debug
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-debuginfo
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-debugsource
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-devel
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-freethreading
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-freethreading-debug
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-idle
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-libs
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-test
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
python3.13-tkinter
Amazon Linux 2023
0:3.13.16-1.amzn2023.0.1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
python3
Azure Linux 3.0
0:3.12.15-1.azl3
fixed
Common Weakness Enumeration
References
https://github.com/python/cpython/commit/2eb0c2f1dc71847731b6ab30aebefd058d482a7f
https://github.com/python/cpython/commit/3105a3498aaf681ce128cf5baf83c2e5574267c5
https://github.com/python/cpython/commit/764fd0af8d9e19d3684a58d2e58bf770f0605036
https://github.com/python/cpython/commit/9c17bace90f88dfba6d0e2fe23c8e7ae35f83955
https://github.com/python/cpython/commit/a4919937a4e1e69a0d178909c6f20557eca5d1d0
https://github.com/python/cpython/commit/c1f106d240c4ffcb3608ed0a20e8aba6c865f6d3
https://github.com/python/cpython/commit/d9565e54b1fc6d63c5be9afd58114499128fa57b
https://github.com/python/cpython/commit/fb2f0bbc3b35264f09cc2cb2934b7987527a6bc2
https://github.com/python/cpython/issues/157265
https://github.com/python/cpython/pull/157266
https://mail.python.org/archives/list/security-announce@python.org/thread/57TBTLL2W6APMZR3A25B2YV7GL3EPTDJ/
http://www.openwall.com/lists/oss-security/2026/09/11/8