CVE-2026-102146

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102146", "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725", "state": "PUBLISHED", "assignerShortName": "cisa-cg", "dateReserved": "2026-09-28T17:39:13.564Z", "datePublished": "2026-09-30T20:08:51.629Z", "dateUpdated": "2026-10-01T13:37:08.241Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service."}], "affected": [{"vendor": "Kiteworks", "product": "Email Protection Gateway", "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThan": "9.5.1", "versionType": "custom"}, {"version": "9.5.1", "status": "unaffected"}]}], "problemTypes": [{"descriptions": [{"description": "CWE-73 External Control of File Name or Path", "lang": "en", "type": "CWE", "cweId": "CWE-73"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}], "title": "Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection", "references": [{"name": "url", "url": "https://github.com/kiteworks/security-advisories/security/advisories/GHSA-5pgq-v8g2-rg2f"}, {"name": "url", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json", "tags": ["third-party-advisory"]}], "credits": [{"value": "Supr4s, https://yeswehack.com/hunters/supr4s", "lang": "en"}], "x_generator": {"engine": "VINCE-NT 1.15.0+build.145"}, "datePublic": "2026-09-30T00:00:00.000Z", "providerMetadata": {"orgId": "9119a7d8-5eab-497f-8521-727c672e3725", "shortName": "cisa-cg", "dateUpdated": "2026-09-30T20:08:51.629Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-102146", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-01T13:25:37.802471Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T13:37:08.241Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-102146", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-01T13:25:37.802471Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T13:32:26.012Z"}}], "cna": {"title": "Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection", "credits": [{"lang": "en", "value": "Supr4s, https://yeswehack.com/hunters/supr4s"}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "Kiteworks", "product": "Email Protection Gateway", "versions": [{"status": "affected", "version": "0", "lessThan": "9.5.1", "versionType": "custom"}, {"status": "unaffected", "version": "9.5.1"}], "defaultStatus": "unknown"}], "datePublic": "2026-09-30T00:00:00.000Z", "references": [{"url": "https://github.com/kiteworks/security-advisories/security/advisories/GHSA-5pgq-v8g2-rg2f", "name": "url"}, {"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json", "name": "url", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "VINCE-NT 1.15.0+build.145"}, "descriptions": [{"lang": "en", "value": "An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-73", "description": "CWE-73 External Control of File Name or Path"}]}], "providerMetadata": {"orgId": "9119a7d8-5eab-497f-8521-727c672e3725", "shortName": "cisa-cg", "dateUpdated": "2026-09-30T20:08:51.629Z"}}}, "cveMetadata": {"cveId": "CVE-2026-102146", "state": "PUBLISHED", "dateUpdated": "2026-10-01T13:37:08.241Z", "dateReserved": "2026-09-28T17:39:13.564Z", "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725", "datePublished": "2026-09-30T20:08:51.629Z", "assignerShortName": "cisa-cg"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Email Protection Gateway", "vendor": "Kiteworks", "versions": [{"lessThan": "9.5.1", "status": "affected", "version": "0", "versionType": "custom"}, {"status": "unaffected", "version": "9.5.1"}]}], "source": "9119a7d8-5eab-497f-8521-727c672e3725"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*", "matchCriteriaId": "E3DAD823-F1FD-402B-86A5-C69DD8261D4B", "versionEndExcluding": "9.5.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service."}], "id": "CVE-2026-102146", "lastModified": "2026-10-13T11:57:18.230", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-102146", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-01T13:25:37.802471Z", "version": "2.0.3"}}]}, "published": "2026-09-30T21:17:03.510", "references": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Vendor Advisory"], "url": "https://github.com/kiteworks/security-advisories/security/advisories/GHSA-5pgq-v8g2-rg2f"}, {"source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Broken Link"], "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json"}], "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-73"}], "source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,9.5.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "9.5.1"}}], "enrichment": {"confidence": 87.0, "confidence_source": "matching", "scores": [{"score": 87.0, "source": "matching"}]}, "original": {"product": "Email Protection Gateway", "source": "cna", "vendor": "Kiteworks"}, "product": "kiteworks_email_protection_gateway", "vendor": "kiteworks"}], "created": "2026-09-30T22:45:16.976905+00:00", "updated": "2026-10-01T15:30:08.272715+00:00", "vendors": ["kiteworks", "kiteworks$PRODUCT$kiteworks_email_protection_gateway"]}