An update for python3 is now available for openEuler-20.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-3068 Final 1.0 1.0 2026-07-19 Initial 2026-07-19 2026-07-19 openEuler SA Tool V1.0 2026-07-19 python3 security update An update for python3 is now available for openEuler-20.03-LTS-SP4 Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C++ (or other languages, depending on the chosen implementation). Python is also usable as an extension language for applications written in other languages that need easy-to-use scripting or automation interfaces. Security Fix(es): When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.(CVE-2026-0864) When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.(CVE-2026-11972) unicodedata.normalize() can take excessive CPU time when processing specially crafted Unicode input containing long runs of combining characters with alternating Canonical Combining Class values. This affects all normalization forms.(CVE-2026-3276) The ftpcp() function in Lib/ftplib.py was not updated when CVE-2021-4189 was fixed. While makepasv() was patched to replace server-supplied PASV host addresses with the actual peer address (getpeername()[0]), ftpcp() still calls parse227() directly and passes the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.(CVE-2026-8328) An update for python3 is now available for master/openEuler-20.03-LTS-SP4/openEuler-22.03-LTS-SP4/openEuler-24.03-LTS-Next/openEuler-24.03-LTS-SP1/openEuler-24.03-LTS-SP3/openEuler-24.03-LTS-SP4/openEuler-22.03-LTS-SP3/openEuler-24.03-LTS/openEuler-24.03-LTS-SP2. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High python3 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3068 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-0864 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-11972 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-3276 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-8328 https://nvd.nist.gov/vuln/detail/CVE-2026-0864 https://nvd.nist.gov/vuln/detail/CVE-2026-11972 https://nvd.nist.gov/vuln/detail/CVE-2026-3276 https://nvd.nist.gov/vuln/detail/CVE-2026-8328 openEuler-20.03-LTS-SP4 python3-3.7.9-54.oe2003sp4.x86_64.rpm python3-debug-3.7.9-54.oe2003sp4.x86_64.rpm python3-debuginfo-3.7.9-54.oe2003sp4.x86_64.rpm python3-debugsource-3.7.9-54.oe2003sp4.x86_64.rpm python3-devel-3.7.9-54.oe2003sp4.x86_64.rpm python3-help-3.7.9-54.oe2003sp4.noarch.rpm python3-3.7.9-54.oe2003sp4.aarch64.rpm python3-debug-3.7.9-54.oe2003sp4.aarch64.rpm python3-debuginfo-3.7.9-54.oe2003sp4.aarch64.rpm python3-debugsource-3.7.9-54.oe2003sp4.aarch64.rpm python3-devel-3.7.9-54.oe2003sp4.aarch64.rpm python3-3.7.9-54.oe2003sp4.src.rpm When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value. 2026-07-19 CVE-2026-0864 openEuler-20.03-LTS-SP4 Medium 4.1 AV:L/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N python3 security update 2026-07-19 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3068 When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer. 2026-07-19 CVE-2026-11972 openEuler-20.03-LTS-SP4 High 8.2 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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 python3 security update 2026-07-19 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3068 unicodedata.normalize() can take excessive CPU time when processing specially crafted Unicode input containing long runs of combining characters with alternating Canonical Combining Class values. This affects all normalization forms. 2026-07-19 CVE-2026-3276 openEuler-20.03-LTS-SP4 Medium 6.3 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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 python3 security update 2026-07-19 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3068 The ftpcp() function in Lib/ftplib.py was not updated when CVE-2021-4189 was fixed. While makepasv() was patched to replace server-supplied PASV host addresses with the actual peer address (getpeername()[0]), ftpcp() still calls parse227() directly and passes the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189. 2026-07-19 CVE-2026-8328 openEuler-20.03-LTS-SP4 Medium 5.9 AV:N/AC:L/AT:P/PR:N/UI:A/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 python3 security update 2026-07-19 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3068