# CVE-2026-38978: transmission: transmission through 4.1.1 was found to have a clickjacking weakness in the browser-facing WebUI and RPC response paths.

CVE-2026-38978 is fixed in 6 products on 1 platform, first by transmission 4.1.1+dfsg-1ubuntu1.1, released June 2, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-38978
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0031
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 2, 2026

## Description

transmission through 4.1.1 was found to have a clickjacking weakness in the browser-facing WebUI and RPC response paths.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | transmission Debian 13.5 (trixie) | 4.1.0~beta2+dfsg-3+deb13u2 | [DEBIAN-CVE-2026-38978](https://patchblox.com/security/data/fix/linux/debian-cve-2026-38978.md) | Jun 24, 2026 |
| Linux | transmission Debian 14 | 4.1.2+dfsg-1 | [DEBIAN-CVE-2026-38978](https://patchblox.com/security/data/fix/linux/debian-cve-2026-38978.md) | Jun 24, 2026 |
| Linux | transmission Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |
| Linux | transmission opensuse-leap 16.0 | 4.0.6-bp160.2.1 | [OPENSUSE-SU-2026:21189-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21189-1.md) | Jul 1, 2026 |
| Linux | transmission-cli Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission-cli 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-cli-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission-cli Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission-cli 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-cli-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission-cli Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission-cli 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-cli-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission-cli Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission-cli 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-cli-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |
| Linux | transmission-common Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission-common 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-common-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission-common Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission-common 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-common-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission-common Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission-common 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-common-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission-common Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission-common 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-common-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |
| Linux | transmission-daemon Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission-daemon 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-daemon-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission-daemon Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission-daemon 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-daemon-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission-daemon Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission-daemon 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-daemon-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission-daemon Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission-daemon 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-daemon-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |
| Linux | transmission-gtk Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission-gtk 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-gtk-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission-gtk Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission-gtk 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-gtk-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission-gtk Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission-gtk 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-gtk-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission-gtk Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission-gtk 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-gtk-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |
| Linux | transmission-qt Ubuntu 22.04.1 LTS (jammy) | 3.00-2ubuntu2.2 | [transmission-qt 3.00-2ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-transmission-qt-3.00-2ubuntu2.2.md) | Jun 24, 2026 |
| Linux | transmission-qt Ubuntu 24.04.5 LTS (noble) | 4.0.5-1ubuntu0.1 | [transmission-qt 4.0.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-transmission-qt-4.0.5-1ubuntu0.1.md) | Jun 24, 2026 |
| Linux | transmission-qt Ubuntu 25.10 (questing) | 4.1.0~beta2+dfsg-3ubuntu1.1 | [transmission-qt 4.1.0~beta2+dfsg-3ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-transmission-qt-4.1.0-beta2-dfsg-3ubuntu1.1.md) | Jun 24, 2026 |
| Linux | transmission-qt Ubuntu 26.04.1 LTS (resolute) | 4.1.1+dfsg-1ubuntu1.1 | [transmission-qt 4.1.1+dfsg-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-transmission-qt-4.1.1-dfsg-1ubuntu1.1.md) | Jun 2, 2026 |

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Data as of 2026-11-09T01:18:40Z 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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