Low severity · published Jul 23, 2026
CVE-2026-15037
XML injection vulnerability in QDom comment, CDATA and processing-instruction serialization
2.9
CVSS
0.4%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QT
Qt · Qt
4.0.0 before 6.12.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15037
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15037
codereview.qt-project.org
https://codereview.qt-project.org/c/qt/qtbase/+/748323
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