Detections
Analytics
Amazon Linux 2 : qt5-qtbase (ALAS-2026-3980)
high Nessus Plugin ID 365175
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of qt5-qtbase installed on the remote host is prior to 5.15.3-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3980 advisory.Improper output neutralization (XML injection) in QDom comment, CDATA, and processing-instruction serialization in Qt XML from 4.0.0 through 6.11 allows untrusted text serialized by an application into those nodes to inject arbitrary XML markup, because the node terminators are not escaped under the default InvalidDataPolicy (AcceptInvalidChars). Fixed in Qt 6.12. (CVE-2026-15037)
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 out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt's fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL- terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x. (CVE-2026-9499)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update qt5-qtbase' or or 'yum update --advisory ALAS2-2026-3980' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-3980.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-15037.html
Plugin Details
Severity: High
ID: 365175
File Name: al2_ALAS-2026-3980.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 10/12/2026
Updated: 10/12/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 93.22
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-9499
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.2
Threat Score: 4.6
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2026-76151
Vulnerability Information
CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:qt5-qtbase-common, p-cpe:/a:amazon:linux:qt5-qtbase-debuginfo, p-cpe:/a:amazon:linux:qt5-qtbase-devel, p-cpe:/a:amazon:linux:qt5-qtbase-examples, p-cpe:/a:amazon:linux:qt5-qtbase-gui, p-cpe:/a:amazon:linux:qt5-qtbase-mysql, p-cpe:/a:amazon:linux:qt5-qtbase-odbc, p-cpe:/a:amazon:linux:qt5-qtbase-postgresql, p-cpe:/a:amazon:linux:qt5-qtbase-private-devel, p-cpe:/a:amazon:linux:qt5-qtbase-static, p-cpe:/a:amazon:linux:qt5-qtbase
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/12/2026
Vulnerability Publication Date: 5/7/2026