# CVE-2026-8168: Qt QtSvg uncontrolled recursion denial of service Source: https://junglewise.ai/threats/cve-2026-8168-uncontrolled-recursion-in-the-svg-parser-and-renderer-of-the-qt Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Published: 2026-10-19. Updated: 2026-10-19 License: CC BY 4.0 with a link back CVE-2026-8168 · Severity: info · Published 2026-10-19 Qt's SVG rendering library can be crashed by processing a malicious SVG file with deeply nested elements. An attacker can use this to disrupt applications that rely on Qt to display SVG graphics, causing them to become unresponsive or crash. Vendors: [Qt Group](https://junglewise.ai/threats/vendors/qt-group). ## Quick answers **Is CVE-2026-8168 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8168 being exploited in the wild. **How severe is CVE-2026-8168?** Informational severity, published 19 October 2026. **Which products and versions are affected?** Qt Group QtSvg . **Is there a fix for CVE-2026-8168?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it. **How is CVE-2026-8168 attacked?** It is attacked over the network, in a software library. **Am I affected by CVE-2026-8168?** Check whether you run Qt Group QtSvg at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you. ## Technical details Uncontrolled recursion in the QtSvg SVG parser and renderer allows stack exhaustion when processing SVG files with deeply nested elements. The vulnerability is triggered by parsing a crafted SVG file; no authentication or user interaction is required beyond opening the file. The attack results in a denial of service through application crash. ## Affected products - Qt Group QtSvg ## Timeline - 2026-10-19: disclosed ## References - [https://codereview.qt-project.org/c/qt/qtsvg/+/730501](https://codereview.qt-project.org/c/qt/qtsvg/+/730501) - [https://codereview.qt-project.org/c/qt/qtsvg/+/730590](https://codereview.qt-project.org/c/qt/qtsvg/+/730590)