CVE-2026-8496

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.

• https://github.com/Alinto/sogo/commit/67ce01ec2a1a7854d8e9f615dd65afb949043e86
• https://github.com/Alinto/sogo/releases/tag/SOGo-5.12.8
• https://www.sogo.nu/news/2026/sogo-v5128-released.html
• https://www.kb.cert.org/vuls/id/487613

Published

May 13, 2026

Last Modified

Aug 6, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-84939Path traversal vulnerability in Apache FreeMarker template l…9.1
• CVE-2026-8494The Permalink Manager Lite plugin for WordPress is vulnerabl…6.4
• CVE-2026-84941An information disclosure vulnerability in the SAML Single S…6.9
• CVE-2026-84942Improper input validation in the Vega expression function im…8.7
• CVE-2026-84947undici's dump interceptor reads and discards a response body…5.3
• CVE-2026-8495Missing Authorization vulnerability in Drupal Date iCal allo…9.8
• CVE-2026-84960The WP-Members Membership Plugin plugin for WordPress is vul…6.1
• CVE-2026-84961undici's BalancedPool constructor passes its entire options …9.1
• CVE-2026-84962An unauthorized user with key vault write access may cause a…4.2
• CVE-2026-84963An incorrect numeric conversion in the JSON parsing componen…5.3
• CVE-2026-84964A double free in the OpenSSL-based TLS certificate revocatio…7.5
• CVE-2026-84965An integer wraparound in an allocation size calculation in t…5.5