CVE catalog

CVE-2026-11573

Uncontrolled recursion (CWE-674) in the…

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.

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 7, 2026, 10:00:00 PM UTC
Updated: Sep 8, 2026, 1:17:17 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.39% · Oct 27, 2026

Projects and upstream resources

[qt6-scxml][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "qt6-base",
      "status": "fixed",
      "release": "sid",
      "version": "6.11.2+dfsg-7"
    },
    {
      "name": "qt6-base",
      "status": "fixed",
      "release": "forky",
      "version": "6.11.2+dfsg-5"
    },
    {
      "name": "qt6-base",
      "status": "fixed",
      "release": "trixie",
      "version": "6.8.2+dfsg-9+deb13u2"
    },
    {
      "name": "qt6-base",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "6.4.2+dfsg-10"
    },
    {
      "name": "qtbase-opensource-src",
      "status": "vulnerable",
      "release": "sid",
      "version": "5.15.19+dfsg-6"
    },
    {
      "name": "qtbase-opensource-src",
      "status": "vulnerable",
      "release": "forky",
      "version": "5.15.19+dfsg-5"
    },
    {
      "name": "qtbase-opensource-src",
      "status": "vulnerable",
      "release": "trixie",
      "version": "5.15.15+dfsg-6+deb13u1"
    },
    {
      "name": "qtbase-opensource-src",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "5.15.8+dfsg-11+deb12u3"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "qt6-base",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": "6.8.2+dfsg-5"
    },
    {
      "bug": null,
      "name": "qt6-base",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": "6.8.2+dfsg-5"
    },
    {
      "bug": null,
      "name": "qt6-base",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": "6.8.2+dfsg-5"
    },
    {
      "bug": null,
      "name": "qt6-base",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "qtbase-opensource-src",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "qtbase-opensource-src",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "qtbase-opensource-src",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "qtbase-opensource-src",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": ""
    }
  ],
  "distribution_packages": []
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libqt5concurrent5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5core5a]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5dbus5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5gui5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5network5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5opengl5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5opengl5-dev]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5printsupport5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-ibase]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-mysql]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-odbc]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-psql]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-sqlite]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5sql5-tds]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5test5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5widgets5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt5xml5]Unknown
Source package: [qtbase-opensource-src]
Details (2)
- 5.15.8+dfsg-11+deb12u3 · amd64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
- 5.15.8+dfsg-11+deb12u3 · arm64 · bookworm
  Affected
  nvd · qtbase-opensource-src · debian · bookworm; nvd · qtbase-opensource-src · debian · 12
[libqt6concurrent6]Unknown
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6core6]Unknown
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12

Next results

Observed: Oct 23, 2026, 9:29:12 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]