# CVE-2026-107157: qt6-base: Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may c...

CVE-2026-107157 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2026-107157, released November 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-107157
- Priority: Routine
- CVSS: n/a (low)
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 26, 2026

## Description

Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mingw-qt5-qtbase Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw-qt5-qtbase-debuginfo Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw-qt6-qtbase Fedora 43 | 6.10.3-2.fc43 | [FEDORA-2026-5244693D13](https://patchblox.com/security/data/fix/linux/fedora-2026-5244693d13.md) | Nov 9, 2026 |
| Linux | mingw32-qt5-qmake Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw32-qt5-qtbase Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw32-qt5-qtbase-debuginfo Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw32-qt5-qtbase-devel Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw32-qt5-qtbase-static Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw32-qt6-qtbase Fedora 43 | 6.10.3-2.fc43 | [FEDORA-2026-5244693D13](https://patchblox.com/security/data/fix/linux/fedora-2026-5244693d13.md) | Nov 9, 2026 |
| Linux | mingw32-qt6-qtbase-debuginfo Fedora 43 | 6.10.3-2.fc43 | [FEDORA-2026-5244693D13](https://patchblox.com/security/data/fix/linux/fedora-2026-5244693d13.md) | Nov 9, 2026 |
| Linux | mingw64-qt5-qmake Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw64-qt5-qtbase Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw64-qt5-qtbase-debuginfo Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw64-qt5-qtbase-devel Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw64-qt5-qtbase-static Fedora 43 | 5.15.18-5.fc43 | [FEDORA-2026-14092CFBB4](https://patchblox.com/security/data/fix/linux/fedora-2026-14092cfbb4.md) | Nov 9, 2026 |
| Linux | mingw64-qt6-qtbase Fedora 43 | 6.10.3-2.fc43 | [FEDORA-2026-5244693D13](https://patchblox.com/security/data/fix/linux/fedora-2026-5244693d13.md) | Nov 9, 2026 |
| Linux | mingw64-qt6-qtbase-debuginfo Fedora 43 | 6.10.3-2.fc43 | [FEDORA-2026-5244693D13](https://patchblox.com/security/data/fix/linux/fedora-2026-5244693d13.md) | Nov 9, 2026 |
| Linux | qt6-base Debian 14 | 6.11.2+dfsg-5 | [DEBIAN-CVE-2026-107157](https://patchblox.com/security/data/fix/linux/debian-cve-2026-107157.md) | Nov 8, 2026 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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