What’s Vulnerable › Vulnerabilities

CVE-2018-17874

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-01 · updated 2026-06-17
• Weakness: CWE-79

Description

ExpressionEngine before 4.3.5 has reflected XSS.

Affected products

• ExpressionEngine: before 4.3.5 — fixed in 4.3.5

How to fix

Upgrade to a fixed version: ExpressionEngine 4.3.5. Check the vendor advisory for mitigations.

References

• https://docs.expressionengine.com/latest/about/changelog.html#version-4-3-5
• https://docs.expressionengine.com/latest/about/changelog.html#version-4-3-5

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