CVE-2026-105923 Null-pointer dereference in QTriangulator reachable through VectorImage
Medium 4.0
Published
Updated
Check this codebase for CVE-2026-105923 and fix it if it is affected.
What it is: CVE-2026-105923 is a medium-severity vulnerability in Qt, published on 21 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-105923 in the wild and no public exploit code.
Affected product: Qt. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-105923/ (Markdown: https://insights.sbomify.com/CVE-2026-105923/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-105923?
CVE-2026-105923 is a medium-severity vulnerability in Qt, published on 21 Oct 2026.
Official description
A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.
Which versions are affected by CVE-2026-105923?
How do I fix CVE-2026-105923?
Upgrade to a fixed version.
Is CVE-2026-105923 being exploited?
There is no known exploitation of CVE-2026-105923 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-105923, ECHO-1fef-0d16-a035, GHSA-fqj5-mj9g-cmjj, UBUNTU-CVE-2026-105923.