# CVE-2026-54433: roundcube: In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted p...

CVE-2026-54433 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-54433, released July 8, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-54433
- Priority: Urgent
- CVSS: 10.0 (critical)
- EPSS: 0.0037
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 14, 2026

## Description

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | roundcube Debian 12.15 (bookworm) | 1.6.5+dfsg-1+deb12u10 | [DEBIAN-CVE-2026-54433](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54433.md) | Jul 8, 2026 |
| Linux | roundcube Debian 13.5 (trixie) | 1.6.17+dfsg-0+deb13u1 | [DEBIAN-CVE-2026-54433](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54433.md) | Jul 8, 2026 |
| Linux | roundcube Debian 14 | 1.6.17+dfsg-1 | [DEBIAN-CVE-2026-54433](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54433.md) | Jul 8, 2026 |
| Linux | roundcubemail opensuse-leap 16.0 | 1.6.20-bp160.1.1 | [OPENSUSE-SU-2026:22195-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22195-1.md) | Nov 7, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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