CVE-2026-127135
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.
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 used 5.3
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 Medium
CVSS: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 Medium
CVSS: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-2026-124532 5.3
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 Medium
CVSS: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-p3pm 5.3
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 Medium
CVSS: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 Medium
CVSS: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
NVD 5.3
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 Medium
CVSS: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 Medium
CVSS: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
OSV 5.3
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 Medium
CVSS: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-2026-127135 4.3
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 Medium
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
sogoDebian: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 less5.11.1-15.11.2-15.11.2-25.11.2-35.11.2-45.12.0-15.12.1-15.12.1-25.12.1-35.12.10-15.12.11-15.12.12-15.12.13-15.12.3-15.12.3-25.12.4-15.12.4-1.15.12.4-1.25.12.6-15.12.7-15.12.8-15.12.8-25.12.9-15.8.0-15.8.0-2+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 |
sogoDebian: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 less5.12.11-15.12.12-15.12.13-15.12.3-15.12.3-25.12.4-15.12.4-1.15.12.4-1.25.12.6-15.12.7-15.12.8-15.12.8-25.12.9-1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| references | OSV | |
| affected, aliases, references | OSV | |
| published | EUVD | |
| published | EUVD | |
| aliases, references | GitHub Advisories | |
| aliases, products, published | EUVD, NVD | |
| first indexed | CVE 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
github.com/Alinto/sogo/releases/tag/SOGo-5.12.13
vulncheck.com/advisories/sogo-before-sieve-script-injection-via-notification-address
nvd.nist.gov/vuln/detail/CVE-2026-127135
github.com/advisories/GHSA-9v7q-p89w-p3pm
github.com/Alinto/sogo
github.com/CVEProject/cvelistV5/tree/main/cves/2026/127xxx/CVE-2026-127135.json
security-tracker.debian.org/tracker/CVE-2026-127135