A HIGH-severity vulnerability identified as CVE-2026-75948 has been published on August 20, 2026 with a CVSS base score of 8.6. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-75948
Severity: HIGH
CVSS Score: 8.6
Published: August 20, 2026
Weakness (CWE): CWE-79
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | Passive |
Technical Description
Joomla Extension – icagenda.com – Authenticated Stored XSS in iCagenda 4.0.8 to 4.0.12 – The frontend "Submit an Event" form stores the `image` and `file` fields as raw strings with no output-side HTML-attribute escaping.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to cause significant damage to affected systems. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-76564 — CVSS 8.6 (August 20, 2026) — HIGH / CVSS 8.6
- [HIGH] CVE-2026-19794 — CVSS 7.2 (August 14, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2026-74578 — CVSS 7.1 (August 16, 2026) — HIGH / CVSS 7.1
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