{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"Alinto/sogo","product":"sogo","source":"CNA: VulnCheck","vendor":"Alinto","versions":[{"lessThan":"5.12.13","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-127135","cwes":["CWE-96"],"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.","epss":{"date":"2026-11-13","percentile":0.14471,"score":0.00234},"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":4.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"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","version":"4.0"},{"score":4.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}],"modifiedAt":1794595910877,"publishedAt":1794499124808,"references":[{"source":"CNA: VulnCheck","tags":["patch","release-notes"],"url":"https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.13"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/sogo-before-sieve-script-injection-via-notification-address"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.13"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/sogo-before-sieve-script-injection-via-notification-address"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.13"}],"revision":"7dcefa83e02c6a9770ca1c2ae8ed73ca9aab3e4d68aab5a86216acba56ffc510","sources":[{"modifiedAt":1794595910877,"name":"CNA: VulnCheck","retrievedAt":1794597906456,"url":"https://www.cve.org/CVERecord?id=CVE-2026-127135"},{"modifiedAt":1794500348170,"name":"NVD","retrievedAt":1794507521542,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127135"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794597920837,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-127135"}],"ssvc":{"assessedAt":1794595779482,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"SOGo before 5.12.13 Sieve Script Injection via Notification Address","updatedAt":1794597920837}