In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, an unsanitized subject field in the draft restored value could lead to stored XSS/HTML/CSS injection on shared mailboxes.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Roundcube Webmail unaffected
Version Status Constraints
1.6.0 affected < 1.6.16
1.7.0 affected < 1.7.1

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No data.

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Project Subscriptions

Vendors Products
Roundcube Subscribe
Webmail Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f768a3a613d61 cve-icon
https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e47bd7f3fd8a cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 cve-icon
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1 cve-icon
History

Mon, 25 May 2026 21:45:00 +0000

Type Values Removed Values Added
Title Stored XSS via Unvalidated Subject Field in Draft Restoration for Roundcube Webmail

Mon, 25 May 2026 20:15:00 +0000

Type Values Removed Values Added
Description In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, an unsanitized subject field in the draft restored value could lead to stored XSS/HTML/CSS injection on shared mailboxes.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-79
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-25T19:30:38.414Z

Reserved: 2026-05-25T19:30:37.961Z

Link: CVE-2026-48849

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-25T21:30:06Z

Weaknesses