Name: CVE-2026-1502: Improper Neutralization of CRLF Sequences
Creator: Rapid7
Published: 2026-04-10T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-1502, CWE-93, CVSS 5.7, EPSS 0.00562

CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.

CVSS Details

CVSS 4.0 Base Score: 5.7 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/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)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade python3.12-idleUpgrade python3.14Upgrade python3.12-libsUpgrade python3.12Upgrade python3.14-libsUpgrade python3.12-tkinterUpgrade python3.12-debugUpgrade python3.14-idleUpgrade python3.14-freethreading-libsUpgrade python3.14-develUpgrade python3.14-freethreading-testUpgrade python3.12-develUpgrade python3.14-freethreading-develUpgrade python3.14-freethreading-debugUpgrade python3.12-rpm-macrosUpgrade python3.14-freethreading-tkinterUpgrade python3.14-debugUpgrade python3.14-tkinterUpgrade python3.12-testUpgrade python3.14-freethreadingUpgrade python3.14-freethreading-idleUpgrade python3.14-test	Apr 29, 2026	Apr 27, 2026
Alpine Linux	—	Upgrade python3	Aug 17, 2026	Apr 10, 2026
Amazon Linux Ami 2	—	Upgrade python3-debuginfoUpgrade python3-libsUpgrade python3-develUpgrade python-debugUpgrade pythonUpgrade python3-tkinterUpgrade python3-toolsUpgrade python3-testUpgrade python-debuginfoUpgrade python-develUpgrade python-libsUpgrade python3-debugUpgrade python-testUpgrade python-toolsUpgrade python3Upgrade tkinter	Aug 5, 2026	Aug 5, 2026
Amazon_linux_2023	—	Upgrade python3.11-develUpgrade python3.12-libsUpgrade python3.11-debuginfoUpgrade python3.11-idleUpgrade python3.13-testUpgrade python3.12-debugUpgrade python3.13-idleUpgrade python3.14-testUpgrade python3.14-idleUpgrade python3.13-debuginfoUpgrade python3.13-debugsourceUpgrade python3.14-freethreading-libsUpgrade python3.14-libsUpgrade python3.13-freethreadingUpgrade python3.13-freethreading-debugUpgrade python3.14-tkinterUpgrade python3.11-debugUpgrade python3.13-tkinterUpgrade python3.12-debugsourceUpgrade python3.14-freethreading-develUpgrade python3.14-freethreadingUpgrade python3.14-debugUpgrade python3.14-debugsourceUpgrade python3.13-develUpgrade python3.11-testUpgrade python3.14-freethreading-debugUpgrade python3.14-develUpgrade python3.12-idleUpgrade python3.12-testUpgrade python3.14-freethreading-testUpgrade python3.14-freethreading-idleUpgrade python3.13-debugUpgrade python3.12-debuginfoUpgrade python3.11Upgrade python3.14-freethreading-tkinterUpgrade python3.12Upgrade python3.13-libsUpgrade python3.12-develUpgrade python3.11-tkinterUpgrade python3.11-debugsourceUpgrade python3.11-libsUpgrade python3.14-debuginfoUpgrade python3.12-tkinterUpgrade python3.14Upgrade python3.13	Jun 9, 2026	Apr 10, 2026
Debian	—	Upgrade python3.11Upgrade python3.13	Jul 23, 2026	Apr 10, 2026
Freebsd	—	Upgrade python311Upgrade python312Upgrade python314Upgrade python313Upgrade python313tUpgrade python310	Apr 14, 2026	Apr 12, 2026
Oracle_linux	—	Upgrade python3.12-idleUpgrade python3.12Upgrade python3.12-testUpgrade python3.12-tkinterUpgrade python3.12-rpm-macrosUpgrade python3.12-develUpgrade python3.12-libsUpgrade python3.12-debug	Apr 29, 2026	Apr 10, 2026
Redhat_linux	—	Upgrade python3.14-develUpgrade python3.14-idleUpgrade python3.12-rpm-macrosUpgrade python3.12-debugUpgrade python3.14-testUpgrade python3.14-freethreading-debugUpgrade python-unversioned-commandUpgrade python3.12-develUpgrade python3.12-libsUpgrade python3.12-idleUpgrade python3.14-freethreading-develUpgrade python3.14Upgrade python3-develUpgrade python3-idleUpgrade python3.14-freethreading-libsUpgrade python3.14-freethreadingUpgrade python3.14-freethreading-testUpgrade python3Upgrade python3.12-debugsourceUpgrade python3.12-tkinterUpgrade python3-libsNo solution existsUpgrade python3-testUpgrade python3.12-debuginfoUpgrade python3-debugUpgrade python3-tkinterUpgrade python3.12Upgrade python3.14-freethreading-tkinterUpgrade python3.14-debuginfoUpgrade python3.14-debugsourceUpgrade python3.14-freethreading-idleUpgrade python3.14-libsUpgrade python3.14-debugUpgrade python3.12-testUpgrade python3.14-tkinter	Apr 29, 2026	Apr 10, 2026
Rocky_linux	—	Upgrade python3-debugUpgrade python3.14-tkinterUpgrade python3-develUpgrade python3.14-develUpgrade python3.14-debugUpgrade python3.14-freethreading-idleUpgrade python3.12-testUpgrade python3.14-idleUpgrade python3.14-freethreading-debugUpgrade python3.14-libsUpgrade python3-idleUpgrade python3.14-debuginfoUpgrade python3.12-debuginfoUpgrade python3.14-freethreading-tkinterUpgrade python3.12Upgrade python3.14-freethreadingUpgrade python3Upgrade python3.14-freethreading-develUpgrade python3.14-freethreading-testUpgrade python3.12-idleUpgrade python3.14-debugsourceUpgrade python3.12-develUpgrade python3.12-debugUpgrade python3.14-testUpgrade python3-libsUpgrade python3-tkinterUpgrade python3.14Upgrade python3.12-debugsourceUpgrade python3.12-libsUpgrade python3.12-tkinterUpgrade python3-testUpgrade python3.14-freethreading-libs	Apr 29, 2026	Apr 28, 2026
Suse	—	Upgrade python3-baseUpgrade python313-toolsUpgrade python313Upgrade python3-dbmUpgrade python312-cursesUpgrade python39Upgrade libpython3_12-1_0Upgrade python313-develUpgrade python3-idleUpgrade python39-baseUpgrade python312-develUpgrade python310-baseUpgrade libpython3_13-1_0Upgrade python312Upgrade python310-dbmUpgrade python3-tkUpgrade python312-dbmUpgrade python312-idleUpgrade python39-dbmUpgrade python310-develUpgrade python312-tkUpgrade libpython3_4m1_0-32bitUpgrade python3-develUpgrade libpython3_6m1_0Upgrade python39-cursesUpgrade python313-tkUpgrade python313-idleUpgrade libpython3_10-1_0Upgrade python313-dbmUpgrade python313-cursesUpgrade libpython3_4m1_0Upgrade libpython3_9-1_0Upgrade python312-toolsUpgrade python310-tkUpgrade python3-doc-devhelpUpgrade python3-cursesUpgrade python3-toolsUpgrade python3Upgrade python310-idleUpgrade python310Upgrade libpython3_6m1_0-32bitUpgrade python312-baseUpgrade python310-toolsUpgrade python313-baseUpgrade python310-cursesUpgrade python3-testsuiteUpgrade python3-doc	May 7, 2026	Apr 28, 2026
Ubuntu	—	Upgrade libpython3.14Upgrade libpython3.12t64Upgrade python3.12Upgrade libpython3.10Upgrade python3.14Upgrade python3.10	Jul 6, 2026	Apr 10, 2026

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CVSS Details

Covered by Rapid7

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