CVE-2026-114720
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection...
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
CVE-2026-114720- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-93
- Updated
- 2026-11-02
EUVDEUVD-2026-107885
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
EUVD-2026-107885- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3p38-q93v-93w8
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection...
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
GHSA-3p38-q93v-93w8- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-93
- Updated
- 2026-11-02
NVD
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
CVE-2026-114720- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-93
- Updated
- 2026-11-02
OSV
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
CVE-2026-114720- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-93
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-114720
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
DEBIAN-CVE-2026-114720- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-114720
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.
- Record
UBUNTU-CVE-2026-114720- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
roundcubeDebian:12 |
All versions, plus listed versions 1.6.1+dfsg-11.6.10+dfsg-11.6.10+dfsg-21.6.11+dfsg-11.6.12+dfsg-1 Show 34 moreShow less1.6.13+dfsg-11.6.14+dfsg-11.6.15+dfsg-11.6.16+dfsg-11.6.17+dfsg-11.6.18+dfsg-11.6.19+dfsg-11.6.2+dfsg-11.6.20+dfsg-11.6.3+dfsg-11.6.3+dfsg-1~deb12u11.6.3+dfsg-21.6.4+dfsg-11.6.4+dfsg-1~deb12u11.6.5+dfsg-11.6.5+dfsg-1+deb12u101.6.5+dfsg-1+deb12u111.6.5+dfsg-1+deb12u121.6.5+dfsg-1+deb12u21.6.5+dfsg-1+deb12u31.6.5+dfsg-1+deb12u41.6.5+dfsg-1+deb12u51.6.5+dfsg-1+deb12u61.6.5+dfsg-1+deb12u71.6.5+dfsg-1+deb12u81.6.5+dfsg-1+deb12u91.6.5+dfsg-1~deb12u11.6.6+dfsg-11.6.6+dfsg-21.6.7+dfsg-11.6.8+dfsg-11.6.8+dfsg-21.6.9+dfsg-11.6.9+dfsg-2 |
None known |
roundcubeDebian:13 |
before 1.6.20+dfsg-0+deb13u1, plus listed versions 1.6.11+dfsg-11.6.12+dfsg-0+deb13u11.6.12+dfsg-11.6.13+dfsg-0+deb13u11.6.13+dfsg-1 Show 11 moreShow less1.6.14+dfsg-11.6.15+dfsg-0+deb13u11.6.15+dfsg-11.6.16+dfsg-0+deb13u11.6.16+dfsg-11.6.17+dfsg-0+deb13u11.6.17+dfsg-11.6.18+dfsg-0+deb13u11.6.18+dfsg-11.6.19+dfsg-0+deb13u11.6.19+dfsg-1 |
1.6.20+dfsg-0+deb13u1 |
roundcubeDebian:14 |
before 1.6.20+dfsg-1, plus listed versions 1.6.11+dfsg-11.6.12+dfsg-11.6.13+dfsg-11.6.14+dfsg-11.6.15+dfsg-1 Show 4 moreShow less1.6.16+dfsg-11.6.17+dfsg-11.6.18+dfsg-11.6.19+dfsg-1 |
1.6.20+dfsg-1 |
roundcubeUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1.1.1+dfsg.1-21.1.2+dfsg.1-51.1.3+dfsg.1-11.1.4+dfsg.1-11.2~beta+dfsg.1-0ubuntu1 Show 8 moreShow less1.2~beta+dfsg.1-0ubuntu1+esm11.2~beta+dfsg.1-0ubuntu1+esm21.2~beta+dfsg.1-0ubuntu1+esm31.2~beta+dfsg.1-0ubuntu1+esm41.2~beta+dfsg.1-0ubuntu1+esm51.2~beta+dfsg.1-0ubuntu1+esm61.2~beta+dfsg.1-0ubuntu1+esm71.2~beta+dfsg.1-0ubuntu1+esm8 |
None known |
roundcubeUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 1.3.0+dfsg.1-11.3.1+dfsg.1-11.3.3+dfsg.1-11.3.3+dfsg.1-21.3.6+dfsg.1-1 Show 8 moreShow less1.3.6+dfsg.1-1ubuntu0.1~esm11.3.6+dfsg.1-1ubuntu0.1~esm21.3.6+dfsg.1-1ubuntu0.1~esm31.3.6+dfsg.1-1ubuntu0.1~esm41.3.6+dfsg.1-1ubuntu0.1~esm51.3.6+dfsg.1-1ubuntu0.1~esm61.3.6+dfsg.1-1ubuntu0.1~esm71.3.6+dfsg.1-1ubuntu0.1~esm8 |
None known |
roundcubeUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 1.3.8+dfsg.1-21.3.10+dfsg.1-11.4.1+dfsg.1-21.4.2+dfsg.1-11.4.2+dfsg.1-2 Show 9 moreShow less1.4.3+dfsg.1-11.4.3+dfsg.1-1ubuntu0.1~esm11.4.3+dfsg.1-1ubuntu0.1~esm21.4.3+dfsg.1-1ubuntu0.1~esm31.4.3+dfsg.1-1ubuntu0.1~esm41.4.3+dfsg.1-1ubuntu0.1~esm51.4.3+dfsg.1-1ubuntu0.1~esm61.4.3+dfsg.1-1ubuntu0.1~esm71.4.3+dfsg.1-1ubuntu0.1~esm8 |
None known |
roundcubeUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 1.4.11+dfsg.1-41.5.0+dfsg.1-21.5.0+dfsg.1-2ubuntu0.1~esm11.5.0+dfsg.1-2ubuntu0.1~esm21.5.0+dfsg.1-2ubuntu0.1~esm31.5.0+dfsg.1-2ubuntu0.1~esm41.5.0+dfsg.1-2ubuntu0.1~esm51.5.0+dfsg.1-2ubuntu0.1~esm6 |
None known |
roundcubeUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 1.6.2+dfsg-11.6.4+dfsg-11.6.5+dfsg-11.6.6+dfsg-11.6.6+dfsg-2 Show 4 moreShow less1.6.6+dfsg-2ubuntu0.11.6.6+dfsg-2ubuntu0.1+esm11.6.6+dfsg-2ubuntu0.1+esm21.6.6+dfsg-2ubuntu0.1+esm3 |
None known |
roundcubeUbuntu:26.10 |
All versions, plus listed versions 1.6.11+dfsg-1 |
None known |
roundcubeUbuntu:Pro:26.04:LTS |
All versions, plus listed versions 1.6.11+dfsg-11.6.11+dfsg-1ubuntu0.26.04.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-114720 is a high vulnerability (CVSS 7.1) in Bulwarkmail Webmail, published October 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.79%, the 56th percentile. Fixed in roundcube 1.6.20+dfsg-0+deb13u1.
References
bugs.debian.org/1151279
github.com/roundcube/roundcubemail/commit/6c3c1897c11e193e47fccaabc87e9ca2a0a73e51
roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5
Show 7 moreShow less
nvd.nist.gov/vuln/detail/CVE-2026-114720
security-tracker.debian.org/tracker/CVE-2026-114720
ubuntu.com/security/CVE-2026-114720
cve.org/CVERecord?id=CVE-2026-114720