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cpython: Incomplete control character validation in http.cookies

🗓️ 19 May 2026 13:35:50Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 13 Views

Python cookies flaw allows characters to bypass input validation via Morsel.update and unpickling.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB		CVE-2026-3644
16 Mar 202617:37
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : python3.13, python3.13-devel, python3.13-freethreading (ALAS2023-2026-1600)
30 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.14, python3.14-devel, python3.14-freethreading (ALAS2023-2026-1617)
30 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2026-1618)
30 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2026-1619)
30 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2026-1620)
30 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : python3, --advisory ALAS2-2026-3217 (ALAS-2026-3217)
1 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : python, --advisory ALAS2-2026-3218 (ALAS-2026-3218)
1 Apr 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : python3.12 (ALSA-2026:10950)
29 Apr 202600:00
–nessus
nessus
Tenable Nessus		Debian dla-4583 : idle-python3.9 - security update
15 May 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2noarchpython-unversioned-command3.12.13-2.el10_2python-unversioned-command-3.12.13-2.el10_2.noarch.rpm
Red Hat Enterprise Linux10.2aarch64python33.12.13-2.el10_2python3-3.12.13-2.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lepython33.12.13-2.el10_2python3-3.12.13-2.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xpython33.12.13-2.el10_2python3-3.12.13-2.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64python33.12.13-2.el10_2python3-3.12.13-2.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64python3-debug3.12.13-2.el10_2python3-debug-3.12.13-2.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lepython3-debug3.12.13-2.el10_2python3-debug-3.12.13-2.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xpython3-debug3.12.13-2.el10_2python3-debug-3.12.13-2.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64python3-debug3.12.13-2.el10_2python3-debug-3.12.13-2.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64python3-devel3.12.13-2.el10_2python3-devel-3.12.13-2.el10_2.aarch64.rpm
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22 Jul 2026 21:31Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5
CVSS 46
EPSS0.00419
SSVC
CWE-791
python cookiesinput validationcontrol charactersmorsel updateunpickling
13