CVE-2026-48849
Stored XSS in Roundcube Webmail
Publication date: 2026-05-25
Last updated on: 2026-05-25
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| roundcube | roundcube | to 1.6.16 (exc) |
| roundcube | roundcube | to 1.7.1 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.