{"id":"CVE-2026-88859","title":"A flaw was found in Evolution","summary":"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 in…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","cwe":["CWE-84"],"vendor":"Red Hat","product":"evolution","affected":["evolution","evolution (all versions)","evolution (all versions)","evolution (all versions)"],"published":"2026-09-10","updated":"2026-09-10","sourceUpdated":"2026-09-10T16:18:10.867","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88859","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-88859","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531401","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88859.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88859"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88859"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T11:37:05.635064Z"},"ingestedAt":"2026-09-10T11:47:38.666Z","epss":0.00318,"epssPercentile":0.24892,"slug":"CVE-2026-88859","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-10 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88859.json)","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":50227,"id":"CVE-2026-88859","ts":1789059487199,"field":"cvss","old":"5.4","new":"6.3"}]}