MEDIUMCVSS v3.1 4.3Vulnerability

CVE-2026-127135

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.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-14T00:40:25.638091+00:00
Epss score
0.00234
Cvss severity
MEDIUM
Cvss score
4.3
Retrieved at
2026-11-14T00:51:03+00:00
Last source
FIRST EPSS
Score
4.3
Cvss version
3.1
Cve id
CVE-2026-127135
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
First seen by Signal
2026-11-12T19:59:23+00:00
Name
CVE-2026-127135
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Published at
2026-11-12T16:19:08.030
Last modified
2026-11-13T19:19:29.203
Epss percentile
0.14471

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CVE-2026-127135 (CVSS v3.1 4.3) — Ninja Signal Threat Intelligence | Ninja Signal