Medium severity · published May 25, 2026
CVE-2026-48849
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…
4.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webmail · Roundcube
1.6.0 before 1.6.16; 1.7.0 before 1.7.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48849
github.com
https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f768a3a613d61
github.com
https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e47bd7f3fd8a
github.com
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
github.com
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
roundcube.net
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1
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