CVE-2026-48849
Deferred Deferred - Pending Action
Stored XSS in Roundcube Webmail

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: MITRE

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.
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Meta Information
Published
2026-05-25
Last Modified
2026-05-25
Generated
2026-06-15
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-48849
EUVD
EUVD-2026-31728
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
roundcube roundcube to 1.6.16 (exc)
roundcube roundcube to 1.7.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability exists in Roundcube Webmail versions 1.6.x before 1.6.16 and 1.7.x before 1.7.1. It involves an unsanitized subject field in the draft restored value, which can lead to stored cross-site scripting (XSS) or HTML/CSS injection attacks on shared mailboxes.

Impact Analysis

The vulnerability can allow an attacker to inject malicious scripts or HTML/CSS into the subject field of email drafts in shared mailboxes. This stored XSS can be executed when other users access the affected mailbox, potentially leading to unauthorized actions, data theft, or session hijacking.

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