CVE-2019-19783
If sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x), a user with a mail account on the service can use a sieve script containing a fileinto directive to create any mailbox with administrator privileges,…
Does this matter?
Lower severity and a low EPSS score (1.65%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x), a user with a mail account on the service can use a sieve script containing a fileinto directive to create any mailbox with administrator privileges, because of folder mishandling in autosieve_createfolder() in imap/lmtp_sieve.c.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.65% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- cyrus/imap · debian/debian linux · fedoraproject/fedora · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 1.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DIV4HQ6LG5GPRO4B5Z2NHCZUPBUVVVF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IGOO5UGEBBDPN7B2YXLK7I7L3Y35EBA/
- https://seclists.org/bugtraq/2019/Dec/38Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202006-23Third Party Advisory
- https://usn.ubuntu.com/4566-1/Third Party Advisory
- https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.htmlPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.htmlPatch, Release Notes, Vendor Advisory
- https://www.debian.org/security/2019/dsa-4590Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DIV4HQ6LG5GPRO4B5Z2NHCZUPBUVVVF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IGOO5UGEBBDPN7B2YXLK7I7L3Y35EBA/
- https://seclists.org/bugtraq/2019/Dec/38Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202006-23Third Party Advisory
- https://usn.ubuntu.com/4566-1/Third Party Advisory
- https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.htmlPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.htmlPatch, Release Notes, Vendor Advisory
- https://www.debian.org/security/2019/dsa-4590Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.