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CVE-2026-127135

SOGo before 5.12.13 Sieve Script Injection via Notification Address

5.3 Medium

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.

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
None
Integrity
Low
Availability
None

What each source reports

CVE List Score used5.3

SOGo before 5.12.13 Sieve Script Injection via Notification Address

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.

Record
CVE-2026-127135
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-96
Updated
2026-11-12
EUVDEUVD-2026-1245325.3

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.

Record
EUVD-2026-124532
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-12
GitHub AdvisoriesGHSA-9v7q-p89w-p3pm5.3

SOGo before 5.12.13 contains a Sieve script injection vulnerability that allows authenticated...

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.

Record
GHSA-9v7q-p89w-p3pm
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-96
Updated
2026-11-12
NVD5.3

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.

Record
CVE-2026-127135
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-96
Updated
2026-11-12
OSV5.3

SOGo before 5.12.13 Sieve Script Injection via Notification Address

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.

Record
CVE-2026-127135
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-96
Updated
2026-11-13
OSVDEBIAN-CVE-2026-1271354.3

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.

Record
DEBIAN-CVE-2026-127135
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-13

Affected products

Affected packages

Affected packages
PackageAffectedFixed
sogo
Debian:12
All versions, plus listed versions
5.10.0-15.10.0-25.10.0-35.11.0-15.11.0-2
Show 32 moreShow less
5.11.1-15.11.2-15.11.2-25.11.2-35.11.2-45.12.0-15.12.1-15.12.1-25.12.1-35.12.10-15.12.11-15.12.12-15.12.13-15.12.3-15.12.3-25.12.4-15.12.4-1.15.12.4-1.25.12.6-15.12.7-15.12.8-15.12.8-25.12.9-15.8.0-15.8.0-2+deb12u15.8.0-2+deb12u25.8.0-2+deb12u35.8.2-15.8.3-15.8.4-15.9.0-15.9.1-1
None known
sogo
Debian:13
All versions, plus listed versions
5.12.1-35.12.1-3+deb13u15.12.1-3+deb13u25.12.1-3+deb13u35.12.10-1
Show 13 moreShow less
5.12.11-15.12.12-15.12.13-15.12.3-15.12.3-25.12.4-15.12.4-1.15.12.4-1.25.12.6-15.12.7-15.12.8-15.12.8-25.12.9-1
None known

History

History
RecordedChangedSources
referencesOSV
affected, aliases, referencesOSV
publishedEUVD
publishedEUVD
aliases, referencesGitHub Advisories
aliases, products, publishedEUVD, NVD
first indexedCVE List

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

In short

CVE-2026-127135 is a medium vulnerability (CVSS 5.3) in Alinto Sogo, published November 12, 2026. No source lists public exploit code. No source names a fixed version.

References

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