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openSUSE Python310 Important Code Execution Threat Advisory 2026-1947-1

suse
Calendar Grey May 18, 2026
Dist Suse Esm H88
Fixes five critical issues with python310 in openSUSE and SUSE Linux Enterprise including remote code execution risks.
An update that solves five vulnerabilities and has one security fix can now be installed.

Summary

## This update for python310 fixes the following issues Security issues: * CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969). * CVE-2026-3446: base64 decoding stops at first padded quad by default (bsc#1261970). * CVE-2026-4786: incomplete mitigation of , %action expansion for command injection to webbrowser.open() (bsc#1262319). * CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS (bsc#1262654). * CVE-2026-6100: arbitrary code execution or information disclosure via use- after-free in decompression modules (bsc#1262098). Non security issue: * Conflicts between different versions of Python (bsc#1258364). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like

Topics%20covered

Topics Covered

security advisory code execution important information disclosure OpenSUSE python310

References

* bsc#1258364

* bsc#1261969

* bsc#1261970

* bsc#1262098

* bsc#1262319

* bsc#1262654

Cross-

* CVE-2026-1502

* CVE-2026-3446

* CVE-2026-4786

* CVE-2026-6019

* CVE-2026-6100

CVSS scores:

* CVE-2026-1502 ( SUSE ): 5.7

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

* CVE-2026-1502 ( SUSE ): 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

* CVE-2026-1502 ( NVD ): 5.7

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

* CVE-2026-3446 ( SUSE ): 6.0

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2026-3446 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

* CVE-2026-3446 ( NVD ): 6.0

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1947-1
Release Date: 2026-05-18T07:49:36Z
Rating: important

Topics%20covered

Topics Covered

security advisory code execution important information disclosure OpenSUSE python310

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