CVE-2026-15310

EUVD-2026-65519
When decompressing crafted zip files using the bzip/LZMA/Zstandard 

compressions, Python could use an attacker-controlled size to 

pre-allocate memory, possibly resulting in memory exhaustion.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
PSFCNA
2.1 LOW
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 42.76%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
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
< 3.14.8
CNA
Debian logo
Debian Releases
Debian Product
Codename
python3.11
bookworm
vulnerable
bookworm (security)
3.11.2-6+deb12u9
fixed
python3.13
forky
vulnerable
sid
vulnerable
trixie
no-dsa
python3.14
forky
3.14.8-1
fixed
sid
3.14.8-1
fixed
python3.15
forky
3.15.0~rc3-2
fixed
sid
3.15.0~rc3-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
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_10-1_0
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
libpython3_11-1_0
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
libpython3_12-1_0
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
libpython3_6m1_0
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python310
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-base
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-curses
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-dbm
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-devel
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-idle
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-tk
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python310-tools
suse enterprise server 15 SP4
3.10.21-150400.4.126.1
fixed
python311
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-base
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-curses
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-dbm
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-devel
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-doc
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-doc-devhelp
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-idle
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-tk
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python311-tools
suse enterprise sap 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise sap 15 SP5
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP4
3.11.16-150400.9.102.1
fixed
suse enterprise server 15 SP5
3.11.16-150400.9.102.1
fixed
python312
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-base
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-curses
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-dbm
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-devel
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-idle
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-tk
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python312-tools
suse enterprise sap 15 SP6
3.12.14-150600.3.68.1
fixed
suse enterprise server 15 SP6
3.12.14-150600.3.68.1
fixed
python36
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-base
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-curses
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-dbm
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-devel
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-idle
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-testsuite
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-tk
suse enterprise server 12 SP3
3.6.15-6.166.1
fixed
python36-tools
suse enterprise server 12 SP3
3.6.15-6.166.1
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/09a2e7e6678b4f65449e7ad8f112c48f944591e2
https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8
https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89
https://github.com/python/cpython/commit/6257029de42ef89b67f3d20137de87d43e197530
https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70
https://github.com/python/cpython/commit/c2bfbcdd1a11690507a10bc0998f95b8dc6b6fac
https://github.com/python/cpython/commit/dcdd406ddbfc4cb29b24c3df17cbabe21d316ce1
https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d237a
https://github.com/python/cpython/commit/f507e6946a3194e83e1d7b8ee6e14567175e46de
https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4
https://github.com/python/cpython/issues/156002
https://github.com/python/cpython/pull/156003
https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK/