Echo: qtbase-opensource-src: security update to 5.15.15+dfsg-6+e5

high Tenable Cloud Security Plugin ID 472779

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module
(QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one
stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A
document with deeply nested elements parses successfully but exhausts the call stack and terminates the
process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later),
QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator<<(QTextStream&, const
QDomNode&). Denial of service only — no code execution and no memory disclosure. (CVE-2026-11573)

Solution

Update the qtbase-opensource-src library and its related packages to version 5.15.15+dfsg-6+e5 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-11573

Plugin Details

Severity: High

ID: 472779

Version: Revision 1.1

Type: Local

Published: 10/5/2026

Updated: 10/5/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-11573

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: 7.1

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2026

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-11573