CVE-2026-127135
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
61/100
Published: 2026-11-12
Modified: 2026-11-12
First seen: 2026-11-12
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
AT:
None
VC:
None
VI:
Low
VA:
None
Description
SOGo before 5.12.13 contains a Sieve script injection vulnerability that allows authenticated users to inject arbitrary Sieve directives by inserting unescaped notification address values into a generated Sieve script. Attackers can embed Sieve redirect or discard statements within the notificationAddress preference to bypass the administrator-configured forwarding-domain constraint and redirect or discard incoming mail.