Description
A cross-site scripting (XSS) vulnerability exists in Alinto SOGo, version 5.12.7. A maliciously crafted ICS calendar invitation files allows arbitrary JavaScript execution within the authenticated SOGo webmail session. The issue occurs because SVG content embedded in the description field of an ICS file, with an onrepeat event handler, is insufficiently sanitized before being rendered in the webmail interface. A remote attacker can execute JavaScript in the victim's browser when the malicious calendar invite is viewed. Successful exploitation may allow mailbox access, email and contact theft, session hijacking, and other actions allowed by an authenticated user.
Published: 2026-05-13
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 14 May 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Alinto
Alinto sogo
Vendors & Products Alinto
Alinto sogo

Wed, 13 May 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79

Wed, 13 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 13 May 2026 18:30:00 +0000

Type Values Removed Values Added
Description A cross-site scripting (XSS) vulnerability exists in Alinto SOGo, version 5.12.7. A maliciously crafted ICS calendar invitation files allows arbitrary JavaScript execution within the authenticated SOGo webmail session. The issue occurs because SVG content embedded in the description field of an ICS file, with an onrepeat event handler, is insufficiently sanitized before being rendered in the webmail interface. A remote attacker can execute JavaScript in the victim's browser when the malicious calendar invite is viewed. Successful exploitation may allow mailbox access, email and contact theft, session hijacking, and other actions allowed by an authenticated user.
Title A cross-site scripting (XSS) vulnerability in Alinto SOGo, version 5.12.7
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-05-13T18:56:18.944Z

Reserved: 2026-05-13T17:31:27.218Z

Link: CVE-2026-8496

cve-icon Vulnrichment

Updated: 2026-05-13T18:56:14.922Z

cve-icon NVD

Status : Deferred

Published: 2026-05-13T19:17:30.700

Modified: 2026-05-14T16:07:11.137

Link: CVE-2026-8496

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T14:30:15Z

Weaknesses