CVE-2026-48849
mediumpriority · track · 10EPSS 0.002 · 15 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-26
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (11)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1671Roundcube Webmail: Mehrere SchwachstellenDeutsch2026-05-25csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Roundcube Webmail ausnutzen, um SQL-Injection-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, erweiterte Berechtigungen zu erlangen, beliebigen Code auszuführen oder Cross-Site-Scripting-Angriffe durchzuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (16)
External citations — patches, advisories, analysis.
- https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f768a3a613d61cnnvd
- https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e47bd7f3fd8acnnvd
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.16cnnvd
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.1cnnvd
- https://roundcube.net/download/Patchcnnvd
- https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1cnnvd
- https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f768a3a613d61enisa_euvd
- https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e47bd7f3fd8aenisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan