CVE-2026-88859

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88859", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-10T10:42:51.932Z", "datePublished": "2026-09-10T11:24:54.094Z", "dateUpdated": "2026-11-06T01:13:30.252Z"}, "containers": {"cna": {"title": "Evolution: evolution: javascript execution via spoofed vcard control bypasses mail script-markup restriction", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "evolution", "defaultStatus": "unknown", "cpes": ["cpe:/o:redhat:rhel_els:6"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "evolution", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:rhel_els:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "evolution", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "evolution", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:9"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-88859", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531401", "name": "RHBZ#2531401", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388"}], "datePublic": "2026-09-10T11:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-84", "description": "Improper Neutralization of Encoded URI Schemes in a Web Page", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-84: Improper Neutralization of Encoded URI Schemes in a Web Page", "workarounds": [{"lang": "en", "value": "To mitigate this issue, users can disable JavaScript execution for HTML mail in Evolution. This can be done through the Evolution preferences or by using `gsettings`. Disabling JavaScript may affect the rendering and functionality of some legitimate HTML emails.\n\nTo disable JavaScript via `gsettings`, execute the following command:\n`gsettings set org.gnome.evolution.mail enable-javascript false`\n\nTo revert this change, execute:\n`gsettings set org.gnome.evolution.mail enable-javascript true`\n\nNote that changes to `gsettings` take effect immediately, but Evolution may need to be restarted for the setting to be fully applied to already open mail views."}], "timeline": [{"lang": "en", "time": "2026-09-10T10:44:06.078Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-10T11:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Jurre van Bergen for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-06T01:13:30.252Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-10T11:37:05.635064Z", "id": "CVE-2026-88859", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-10T11:37:19.259Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-88859", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-10T11:37:05.635064Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-10T11:37:12.696Z"}}], "cna": {"title": "Evolution: evolution: javascript execution via spoofed vcard control bypasses mail script-markup restriction", "credits": [{"lang": "en", "value": "Red Hat would like to thank Jurre van Bergen for reporting this issue."}], "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"cpes": ["cpe:/o:redhat:rhel_els:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "evolution", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:rhel_els:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "evolution", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "evolution", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "evolution", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2026-09-10T10:44:06.078Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-10T11:00:00.000Z", "value": "Made public."}], "datePublic": "2026-09-10T11:00:00.000Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-88859", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531401", "name": "RHBZ#2531401", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388"}], "workarounds": [{"lang": "en", "value": "To mitigate this issue, users can disable JavaScript execution for HTML mail in Evolution. This can be done through the Evolution preferences or by using `gsettings`. Disabling JavaScript may affect the rendering and functionality of some legitimate HTML emails.\n\nTo disable JavaScript via `gsettings`, execute the following command:\n`gsettings set org.gnome.evolution.mail enable-javascript false`\n\nTo revert this change, execute:\n`gsettings set org.gnome.evolution.mail enable-javascript true`\n\nNote that changes to `gsettings` take effect immediately, but Evolution may need to be restarted for the setting to be fully applied to already open mail views."}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-84", "description": "Improper Neutralization of Encoded URI Schemes in a Web Page"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-06T01:13:30.252Z"}, "x_redhatCweChain": "CWE-84: Improper Neutralization of Encoded URI Schemes in a Web Page"}}, "cveMetadata": {"cveId": "CVE-2026-88859", "state": "PUBLISHED", "dateUpdated": "2026-11-06T01:13:30.252Z", "dateReserved": "2026-09-10T10:42:51.932Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2026-09-10T11:24:54.094Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "unknown", "packageName": "evolution", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "evolution", "product": "Red Hat Enterprise Linux 7", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "evolution", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "evolution", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content."}], "id": "CVE-2026-88859", "lastModified": "2026-11-06T02:17:55.073", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-88859", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-10T11:37:05.635064Z", "version": "2.0.3"}}]}, "published": "2026-09-10T12:16:33.980", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-88859"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531401"}, {"source": "secalert@redhat.com", "url": "https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-84"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Jurre van Bergen for reporting this issue.", "bugzilla": {"description": "evolution: evolution: javascript execution via spoofed vCard control bypasses mail script-markup restriction", "id": "2531401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531401"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-84", "details": ["A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, users can disable JavaScript execution for HTML mail in Evolution. This can be done through the Evolution preferences or by using `gsettings`. Disabling JavaScript may affect the rendering and functionality of some legitimate HTML emails.\nTo disable JavaScript via `gsettings`, execute the following command:\n`gsettings set org.gnome.evolution.mail enable-javascript false`\nTo revert this change, execute:\n`gsettings set org.gnome.evolution.mail enable-javascript true`\nNote that changes to `gsettings` take effect immediately, but Evolution may need to be restarted for the setting to be fully applied to already open mail views."}, "name": "CVE-2026-88859", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "evolution", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "evolution", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "evolution", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "evolution", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-10T11:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-88859\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-88859\nhttps://gitlab.gnome.org/GNOME/evolution/-/work_items/3388"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 7", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}], "created": "2026-09-10T12:30:07.453884+00:00", "updated": "2026-09-13T20:01:02.155796+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux"]}