Vulnerability-Lookup

RHSA-2026:59393

Vulnerability from csaf_redhat - Published: 2026-08-25 11:58 - Updated: 2026-09-24 04:18

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: qt6-qtbase: * qt6-qtbase-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-common-6.11.2-2.hum1 (noarch) * qt6-qtbase-devel-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-examples-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-gui-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-ibase-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-mysql-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-odbc-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-postgresql-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-private-devel-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-static-6.11.2-2.hum1 (aarch64, x86_64) * qt6-qtbase-6.11.2-2.hum1.src (src)

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-19248

A flaw was found in Qt. This vulnerability, specifically an unbounded recursion in the QDomNode destructor during QDomDocument XML parsing, allows a remote attacker to trigger a denial-of-service (DoS) crash. By processing untrusted XML input, the affected system can become unresponsive, leading to a disruption of service.

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Affected products

Fixed 23 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-0:6.11.2-2.hum1@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-common-0:6.11.2-2.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-common-0:6.11.2-2.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-devel-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-devel-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-examples-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-examples-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-gui-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-gui-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-ibase-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-ibase-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-mysql-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-mysql-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-odbc-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-odbc-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-postgresql-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-postgresql-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-private-devel-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-private-devel-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-static-0:6.11.2-2.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:qt6-qtbase-static-0:6.11.2-2.hum1@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

CVE-2026-78253

A flaw was found in Qt. An attacker can exploit uncontrolled recursion in the `QXmlStreamReader::readElementText()` function by providing a specially crafted XML document. This can lead to a denial of service (DoS), causing the application to crash due to stack exhaustion.

4.7 (Medium)


                
                  CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Affected products

Fixed 23 products, the same list as for CVE-2026-19248

Threats

Impact Moderate

References

16 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:59393	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-19248	external
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/security/cve/CVE-2026-78253	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-19248	self
https://bugzilla.redhat.com/show_bug.cgi?id=2535011	external
https://www.cve.org/CVERecord?id=CVE-2026-19248	external
https://nvd.nist.gov/vuln/detail/CVE-2026-19248	external
https://codereview.qt-project.org/c/qt/qtbase/+/740427	external
https://access.redhat.com/security/cve/CVE-2026-78253	self
https://bugzilla.redhat.com/show_bug.cgi?id=2539372	external
https://www.cve.org/CVERecord?id=CVE-2026-78253	external
https://nvd.nist.gov/vuln/detail/CVE-2026-78253	external
https://codereview.qt-project.org/c/qt/qtbase/+/754345	external

JSON

To clipboard

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        "id": "CWE-776",
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          "category": "description",
          "text": "A flaw was found in Qt. An attacker can exploit uncontrolled recursion in the `QXmlStreamReader::readElementText()` function by providing a specially crafted XML document. This can lead to a denial of service (DoS), causing the application to crash due to stack exhaustion.",
          "title": "Vulnerability description"
        },
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          "text": "qt: Qt: Denial of Service via uncontrolled recursion in XML processing",
          "title": "Vulnerability summary"
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          "category": "other",
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          "title": "Statement"
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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CVE-2026-19248 (GCVE-0-2026-19248)

Vulnerability from cvelistv5 – Published: 2026-09-16 06:37 – Updated: 2026-09-16 15:02

Title

Unbounded recursion vulnerability in the QDomNode destructor of Qt XML impacts Qt

Summary

QDomDocument XML parsing is vulnerable to a remotely-triggerable denial-of-service crash when processing untrusted input.

Severity

7.1 (High)


                        
                          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/AU:N/R:U/V:D/RE:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 15:02 UTC

CWE

CWE-674 - Uncontrolled Recursion

Assigner

Qt mitre root

References

1 reference

URL	Tags
https://codereview.qt-project.org/c/qt/qtbase/+/740427	patch

Impacted products

1 product

Vendor	Product	Version
qt	qt	Affected: 2.2.0 , ≤ 6.8.8 (python) Affected: 6.9.0 , ≤ 6.11.1 (python)

Date Public

2026-09-11 00:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-78253 (GCVE-0-2026-78253)

Vulnerability from cvelistv5 – Published: 2026-09-23 11:39 – Updated: 2026-09-23 14:36

Title

Denial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts Qt

Summary

Uncontrolled recursion in QXmlStreamReader::readElementText() in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted XML document.

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:N/R:U/RE:L/U:Green

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 14:35 UTC

CWE

CWE-674 - Uncontrolled Recursion

Assigner

Qt mitre root

References

1 reference

URL	Tags
https://codereview.qt-project.org/c/qt/qtbase/+/754345	patch

Impacted products

1 product

Vendor	Product	Version
qt	qt	Affected: 5.0.0 , ≤ 6.8.8 (python) Affected: 6.9.0 , ≤ 6.11.1 (python) cpe:2.3:a:qt:qt:::::::: cpe:2.3:a:qt:qt::::::::

Date Public

2026-09-23 00:00

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

RHSA-2026:59393

CVE-2026-19248 (GCVE-0-2026-19248)

CVE-2026-78253 (GCVE-0-2026-78253)

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