EUVD-2026-75397
GHSA-8j98-q77q-pmv2
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Network delivery via email (AV:N), single click required (UI:R), impact limited to mail-viewer JavaScript context (C:L/I:L, S:U, A:N).
Primary rating from Vendor (redhat).
CVSS VectorNVD
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
JavaScript injection in Evolution email client allows a remote, unauthenticated attacker to execute arbitrary JavaScript within the mail-viewing context by sending a specially crafted HTML email containing a spoofed vCard control. When the victim clicks the vCard control, Evolution's trusted JavaScript handler incorrectly places an attacker-controlled javascript: URL into an iframe's src attribute, bypassing Evolution's own script-execution protections for email content. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must be using the Evolution email client (specifically GNOME Evolution as packaged in RHEL 6-9) and must click on the attacker-crafted vCard control embedded in the HTML email body - passive email preview alone does not trigger execution. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N yields a score of 5.4 (Medium). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Monitor the Red Hat security advisory at https://access.redhat.com/security/cve/CVE-2026-88859 for an updated Evolution RPM package; no specific patched version number is confirmed in the available data, so a vendor-released patch has not been independently verified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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