| Name | CVE-2026-16762 |
| Description | An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of confidentiality or integrity — no data disclosure, data modification, or code execution — and the impact is contained to the affected process. |
| 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) |
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 | 6.11.2+dfsg-5 | fixed | |
| sid | 6.11.2+dfsg-6 | 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 | |
| qtbase-opensource-src-gles (PTS) | bookworm | 5.15.8+dfsg-3 | vulnerable |
| trixie | 5.15.15+dfsg-2 | vulnerable | |
| forky, sid | 5.15.19+dfsg-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qt6-base | source | (unstable) | 6.11.2+dfsg-5 | |||
| qtbase-opensource-src | source | (unstable) | (unfixed) | |||
| qtbase-opensource-src-gles | source | (unstable) | (unfixed) |
https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-16762:
Fixed by: https://github.com/qt/qtbase/commit/564db12e40089b946c2feaac2a029a0c56e6e588 (v6.11.2)
Fixed by: https://github.com/qt/qtbase/commit/cd0f0803955a04b9d7e3a24d4e40f8405df2bba8 (v6.11.2)