| Name | CVE-2026-78253 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1150200 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qt6-base (PTS) | bookworm | 6.4.2+dfsg-10 | vulnerable |
| trixie | 6.8.2+dfsg-9+deb13u2 | vulnerable |
| forky, sid | 6.11.2+dfsg-5 | fixed |
| qtbase-opensource-src (PTS) | bookworm | 5.15.8+dfsg-11+deb12u3 | vulnerable |
| trixie | 5.15.15+dfsg-6+deb13u1 | vulnerable |
| forky, sid | 5.15.19+dfsg-5 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[trixie] - qt6-base <no-dsa> (Minor issue)
[bookworm] - qt6-base <postponed> (Minor issue)
[trixie] - qtbase-opensource-src <no-dsa> (Minor issue)
[bookworm] - qtbase-opensource-src <postponed> (Minor issue)
https://codereview.qt-project.org/c/qt/qtbase/+/754345
https://github.com/qt/qtbase/commit/50cc08f278c6961d00b5b8bae408d4ccc2fbca4d (dev)
https://github.com/qt/qtbase/commit/f91c48650443262db9be37d5239ebe0db18e9555 (v6.11.2)