CVE-2026-39915: Tim Solutions Tim Flow

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

TIM Flow before 26.0.6 contains a CRLF injection vulnerability that allows remote attackers to inject arbitrary HTTP headers and response body content by embedding unsanitized carriage return and line feed sequences in the rt URL parameter, which is reflected into Set-Cookie response headers. Attackers can craft malicious requests to induce authenticated users to execute arbitrary JavaScript in their browser context, enabling session token theft and account credential modification.

Affected products

• Tim Solutions Tim Flow: before 26.0.6 (fixed in 26.0.6)

Published 2026-08-24. Last modified 2026-09-24.