{"api_version":"1","generated_at":"2026-10-14T20:59:42+00:00","cve":"CVE-2026-110777","urls":{"html":"https://cve.report/CVE-2026-110777","api":"https://cve.report/api/cve/CVE-2026-110777.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-110777","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110777"},"summary":{"title":"Evolution-data-server: local file disclosure via attach file:// uris","description":"A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events.","state":"PUBLISHED","assigner":"redhat","published_at":"2026-10-14 18:17:36","updated_at":"2026-10-14 20:13:37"},"problem_types":["CWE-200","CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"],"metrics":[{"version":"3.1","source":"secalert@redhat.com","type":"Secondary","score":"5.7","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"5.7","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/672","name":"https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/672","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2026-110777","name":"https://access.redhat.com/security/cve/CVE-2026-110777","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552693","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2552693","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110777","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110777","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-10-14T17:16:26.855Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2026-10-08T00:00:00.000Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Red Hat would like to thank Giuseppe Lobraico (Perspican) for reporting this issue.","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"evolution-data-server","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"evolution-data-server","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","packageName":"evolution-data-server","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"evolution-data-server","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"evolution-data-server","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}],"credits":[{"lang":"en","value":"Red Hat would like to thank Giuseppe Lobraico (Perspican) for reporting this issue."}],"datePublic":"2026-10-08T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Moderate"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","description":"Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-14T18:51:08.491Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-110777"},{"name":"RHBZ#2552693","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552693"},{"url":"https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/672"}],"timeline":[{"lang":"en","time":"2026-10-14T17:16:26.855Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-10-08T00:00:00.000Z","value":"Made public."}],"title":"Evolution-data-server: local file disclosure via attach file:// uris","x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2026-110777","datePublished":"2026-10-14T18:08:36.828Z","dateReserved":"2026-10-14T17:38:34.755Z","dateUpdated":"2026-10-14T18:51:08.491Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-14 18:17:36","lastModifiedDate":"2026-10-14 20:13:37","problem_types":["CWE-200","CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.1,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"110777","Ordinal":"1","Title":"Evolution-data-server: local file disclosure via attach file:// ","CVE":"CVE-2026-110777","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"110777","Ordinal":"1","NoteData":"A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events.","Type":"Description","Title":"Evolution-data-server: local file disclosure via attach file:// "}]}}}