Vulnerability in Tim Solutions Flow

CVE-2026-39915

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.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-39915?
CVE-2026-39915 is a high-severity vulnerability in Tim Solutions Flow, classified under HTTP Response Splitting. CVSS score: 8.1/10. Published 2026-08-24.
How severe is CVE-2026-39915?
High severity. CVSS v3 base score is 8.1 out of 10.