An update for qt6-qtbase is now available for openEuler-24.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-4721 Final 1.0 1.0 2026-11-04 Initial 2026-11-04 2026-11-04 openEuler SA Tool V1.0 2026-11-04 qt6-qtbase security update An update for qt6-qtbase is now available for openEuler-24.03-LTS-SP3 Qt is a software toolkit for developing applications. Security Fix(es): A NULL pointer dereference vulnerability in the Qt QCborValue to JSON conversion of the Qt Core module.(CVE-2026-105924) Out-of-bounds read in the QAuthenticator NTLM authentication handling in the Qt Network module in Qt Group Qt allows remote attackers to obtain sensitive information (heap memory contents) or cause a denial of service (application crash) via a crafted NTLM challenge sent by a malicious server or proxy, when an application using QNetworkAccessManager or QTcpSocket authenticates with NTLM.(CVE-2026-105946) Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information.(CVE-2026-107157) QDomDocument XML parsing is vulnerable to a remotely-triggerable denial-of-service crash when processing untrusted input.(CVE-2026-19248) Out-of-bounds read (buffer over-read) in the HTTP Cache-Control response header parsing in the QtNetwork module in Qt Group Qt 6.0.0 through 6.8.8, and 6.9.0 through 6.11.1, allows remote attackers to cause a denial of service (application crash) via an excessively large Cache-Control header value returned by an untrusted or compromised HTTP server to an application using QNetworkAccessManager. Only the client side of the connection is affected and 32-bit builds are not affected; the out-of-bounds access is read-only, with no information disclosure and no code execution.(CVE-2026-76151) An update for qt6-qtbase is now available for openEuler-24.03-LTS-SP3. 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 qt6-qtbase https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-105924 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-105946 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-107157 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-19248 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-76151 https://nvd.nist.gov/vuln/detail/CVE-2026-105924 https://nvd.nist.gov/vuln/detail/CVE-2026-105946 https://nvd.nist.gov/vuln/detail/CVE-2026-107157 https://nvd.nist.gov/vuln/detail/CVE-2026-19248 https://nvd.nist.gov/vuln/detail/CVE-2026-76151 openEuler-24.03-LTS-SP3 qt6-qtbase-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-debuginfo-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-debugsource-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-devel-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-examples-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-gui-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-ibase-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-mysql-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-odbc-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-postgresql-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-private-devel-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-static-6.5.2-18.oe2403sp3.aarch64.rpm qt6-qtbase-6.5.2-18.oe2403sp3.src.rpm qt6-qtbase-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-debuginfo-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-debugsource-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-devel-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-examples-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-gui-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-ibase-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-mysql-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-odbc-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-postgresql-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-private-devel-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-static-6.5.2-18.oe2403sp3.x86_64.rpm qt6-qtbase-common-6.5.2-18.oe2403sp3.noarch.rpm A NULL pointer dereference vulnerability in the Qt QCborValue to JSON conversion of the Qt Core module. 2026-11-04 CVE-2026-105924 openEuler-24.03-LTS-SP3 Medium 4.3 AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green qt6-qtbase security update 2026-11-04 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721 Out-of-bounds read in the QAuthenticator NTLM authentication handling in the Qt Network module in Qt Group Qt allows remote attackers to obtain sensitive information (heap memory contents) or cause a denial of service (application crash) via a crafted NTLM challenge sent by a malicious server or proxy, when an application using QNetworkAccessManager or QTcpSocket authenticates with NTLM. 2026-11-04 CVE-2026-105946 openEuler-24.03-LTS-SP3 Medium 5.3 AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P qt6-qtbase security update 2026-11-04 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721 Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information. 2026-11-04 CVE-2026-107157 openEuler-24.03-LTS-SP3 Low 2.0 AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Amber qt6-qtbase security update 2026-11-04 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721 QDomDocument XML parsing is vulnerable to a remotely-triggerable denial-of-service crash when processing untrusted input. 2026-11-04 CVE-2026-19248 openEuler-24.03-LTS-SP3 High 7.1 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:N/R:U/V:D/RE:L qt6-qtbase security update 2026-11-04 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721 Out-of-bounds read (buffer over-read) in the HTTP Cache-Control response header parsing in the QtNetwork module in Qt Group Qt 6.0.0 through 6.8.8, and 6.9.0 through 6.11.1, allows remote attackers to cause a denial of service (application crash) via an excessively large Cache-Control header value returned by an untrusted or compromised HTTP server to an application using QNetworkAccessManager. Only the client side of the connection is affected and 32-bit builds are not affected; the out-of-bounds access is read-only, with no information disclosure and no code execution. 2026-11-04 CVE-2026-76151 openEuler-24.03-LTS-SP3 Medium 4.6 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:A qt6-qtbase security update 2026-11-04 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4721