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CVE-2026-3317: Reflected Cross-Site Scripting in Navigate CMS application

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-21 · updated 2026-10-26
• Weakness: CWE-79

Description

Reflected Cross-Site Scripting (XSS) vulnerability in Navigate Content Management System. The vulnerability is present in the '/blog' endpoint because user input is not properly sanitized through designed query parameters. This results in unsafe HTML rendering, which could allow a remote attacker to execute JavaScript code in the victim's browser.

Affected products

• Navigate CMS: through 2.9.5

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-navigate-cms-application

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