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cpython: Header injection via newlines in data URL mediatype in Python

🗓️ 19 May 2026 18:28:12Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 26 Views

Python data URLs with newline in mediatype allow header injection via DataHandler.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB		CVE-2025-15282
20 Jan 202621:35
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : python3.13, python3.13-devel, python3.13-freethreading (ALAS2023-2026-1437)
19 Feb 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2026-1444)
19 Feb 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2026-1447)
6 Mar 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2026-1583)
13 Apr 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : python3, --advisory ALAS2-2026-3184 (ALAS-2026-3184)
6 Mar 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : python, --advisory ALAS2-2026-3185 (ALAS-2026-3185)
6 Mar 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : python3.12 (ALSA-2026:10950)
29 Apr 202600:00
–nessus
nessus
Tenable Nessus		Debian dla-4455 : idle-python3.9 - security update
25 Jan 202600:00
–nessus
nessus
Tenable Nessus		EulerOS 2.0 SP15 : python3 (EulerOS-SA-2026-2466)
27 Jun 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8aarch64python3.123.12.13-2.el9_8python3.12-3.12.13-2.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8i686python3.123.12.13-2.el9_8python3.12-3.12.13-2.el9_8.i686.rpm
Red Hat Enterprise Linux9.8ppc64lepython3.123.12.13-2.el9_8python3.12-3.12.13-2.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xpython3.123.12.13-2.el9_8python3.12-3.12.13-2.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64python3.123.12.13-2.el9_8python3.12-3.12.13-2.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64python3.12-debug3.12.13-2.el9_8python3.12-debug-3.12.13-2.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8i686python3.12-debug3.12.13-2.el9_8python3.12-debug-3.12.13-2.el9_8.i686.rpm
Red Hat Enterprise Linux9.8ppc64lepython3.12-debug3.12.13-2.el9_8python3.12-debug-3.12.13-2.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xpython3.12-debug3.12.13-2.el9_8python3.12-debug-3.12.13-2.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64python3.12-debug3.12.13-2.el9_8python3.12-debug-3.12.13-2.el9_8.x86_64.rpm
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23 Aug 2026 02:08Current
7.2High risk
Vulners AI Score7.2
CVSS 46
EPSS0.00499
SSVC
CWE-93
data URLsnewline injectionmediatype issueheader injectiondata handlerpython security
26