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CVE-2018-9846

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's...

8.8 HighFix available

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.28%Up 1.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
CVE-2018-9846
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
CVE-2018-9846
Updated
2026-11-02
EUVDEUVD-2018-21440 No score

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
EUVD-2018-21440
Updated
2026-11-03
GitHub AdvisoriesGHSA-3v75-9ch3-wfrw 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's...

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
GHSA-3v75-9ch3-wfrw
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVALPINE-CVE-2018-9846 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
ALPINE-CVE-2018-9846
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
CVE-2018-9846
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2018-9846 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
DEBIAN-CVE-2018-9846
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-9846 8.8

In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.

Record
UBUNTU-CVE-2018-9846
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2018-0288 No score

Updated roundcubemail packages fix security vulnerability

Updated roundcubemail package fixes security vulnerability:

This update fixes a recently discovered IMAP command injection vulnerability caused by insufficient input validation within the archive plugin. (CVE-2018-9846).

Record
MGASA-2018-0288
Updated
2026-11-02
OSVopenSUSE-SU-2024:11303-1 No score

roundcubemail-1.4.11-1.3 on GA media

These are all security issues fixed in the roundcubemail-1.4.11-1.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11303-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
roundcubemail
Alpine:v3.10
 before 1.3.6-r0
1.3.6-r0
roundcubemail
Alpine:v3.7
 before 1.3.6-r0
1.3.6-r0
roundcubemail
Alpine:v3.8
 before 1.3.6-r0
1.3.6-r0
roundcubemail
Alpine:v3.9
 before 1.3.6-r0
1.3.6-r0
roundcube
Debian:12
 before 1.3.6+dfsg.1-1
1.3.6+dfsg.1-1
roundcube
Debian:13
 before 1.3.6+dfsg.1-1
1.3.6+dfsg.1-1
roundcube
Debian:14
 before 1.3.6+dfsg.1-1
1.3.6+dfsg.1-1
roundcube
Debian:9
 before 1.2.3+dfsg.1-4+deb9u2, plus listed versions
1.2.3+dfsg.1-41.2.3+dfsg.1-4+deb9u1
1.2.3+dfsg.1-4+deb9u2
roundcubemail
Mageia:6
 before 1.3.6-1.1.mga6
1.3.6-1.1.mga6
roundcube
Ubuntu:Pro:16.04:LTS
 before 1.2~beta+dfsg.1-0ubuntu1+esm7, 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 6 moreShow less
1.2~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+esm6
1.2~beta+dfsg.1-0ubuntu1+esm7
roundcubemail
openSUSE:Tumbleweed
From an advisory covering 8 CVEs
 before 1.4.11-1.3
1.4.11-1.3

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-9846 is a high vulnerability (CVSS 8.8) in Debian Linux, published April 7, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.28%, the 83rd percentile. Fixed in roundcubemail 1.3.6-r0.

References

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