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CVE-2026-29519: Lucee CFML Server Reflected XSS via URL Path Parsing

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-07-14
• Weakness: CWE-79

Description

Lucee CFML Server versions across the 5.3.x, 6.1.x, 6.2.x, and 7.0.x release lines contain a reflected cross-site scripting vulnerability in URL path parsing that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser by embedding HTML or JavaScript payloads within the request path. Attackers can craft a malicious URL containing injected script content that is reflected in the server's response without proper output encoding, enabling session hijacking or unauthorized actions against the Lucee administrative interface when a victim visits the crafted link.

Affected products

• Lucee: from 5.3.1.95 through 7.0.0.395

References

• https://github.com/L4V4D0/CVE-2026-29519-Lucee-Reflected-XSS
• https://www.vulncheck.com/advisories/lucee-cfml-server-reflected-xss-via-url-path-parsing

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