CVE catalog

CVE-2026-114722

roundcube: CVE-2026-114722

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published: Oct 22, 2026, 1:39:43 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.25% · Oct 25, 2026

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcube_utils::mod_css_styles() did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were left unscoped and applied to the whole Roundcube interface instead of being confined to the message body. This allows an HTML message to restyle application chrome for UI redressing and spoofing. Upstream fixed this in the commit “Fix CSS scoping bypass in HTML messages using at-rules”.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	roundcube	sid	`1.6.20+dfsg-1`	fixed
Debian	roundcube	forky	`1.6.20+dfsg-1`	fixed
Debian	roundcube	trixie	`1.6.18+dfsg-0+deb13u1`	vulnerable
Debian	roundcube	trixie-security	`1.6.20+dfsg-0+deb13u1`	fixed
Debian	roundcube	bookworm	`1.6.5+dfsg-1+deb12u9`	vulnerable
Debian	roundcube	bookworm-security	`1.6.5+dfsg-1+deb12u12`	vulnerable
Ubuntu	roundcube	pro	`1.6.11+dfsg-1`	vulnerable
Ubuntu	roundcube	pro	`1.6.11+dfsg-1ubuntu0.26.04.1~esm1`	vulnerable
Ubuntu	roundcube	26.10	`1.6.11+dfsg-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	roundcube	source	sid	`1.6.20+dfsg-1`	not yet assigned	Not reported	[1151279]
Debian	roundcube	source	forky	`1.6.20+dfsg-1`	not yet assigned	Not reported	[1151279]
Debian	roundcube	source	trixie	`1.6.20+dfsg-0+deb13u1`	not yet assigned	Not reported	[1151279]
Debian	roundcube	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1151279]

[Debian bug #1151279]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[roundcube]Affected
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
[roundcube-core]Affected
Source package: [roundcube]
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
[roundcube-mysql]Affected
Source package: [roundcube]
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
[roundcube-pgsql]Affected
Source package: [roundcube]
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
[roundcube-plugins]Affected
Source package: [roundcube]
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
[roundcube-sqlite3]Affected
Source package: [roundcube]
Details (4)
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u9 · all · bookworm
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12
- 1.6.5+dfsg-1+deb12u11 · all · bookworm-security
  Affected
  dsa · roundcube · debian · bookworm; dsa · roundcube · debian · 12

[Debian 13 (Trixie)]

[roundcube]Affected
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
[roundcube-core]Affected
Source package: [roundcube]
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
[roundcube-mysql]Affected
Source package: [roundcube]
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
[roundcube-pgsql]Affected
Source package: [roundcube]
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
[roundcube-plugins]Affected
Source package: [roundcube]
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
[roundcube-sqlite3]Affected
Source package: [roundcube]
Details (7)
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.16+dfsg-0+deb13u1 · all · trixie
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.17+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.18+dfsg-0+deb13u1 · all · trixie-security
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.19+dfsg-0+deb13u1 · all · trixie-security · Historical version
  Affected · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13
- 1.6.20+dfsg-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 1.6.20+dfsg-0+deb13u1
  dsa · roundcube · debian · 13

Observed: Oct 27, 2026, 4:07:55 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]