CVE-2026-39915CWE-113

CVE-2026-39915

High · published August 24, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
40.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
8.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00476 · 40.1th percentile
Weakness
CWE-113 · Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
Published
2026-08-24T19:16Z
References (2)
EPSS history
Timeline
  • 26 AUG 07:59Z
    EPSS moved — → 0%
    epss
  • 24 AUG 14:14Z
    TIM Flow < 26.0.6 CRLF Injection via rt Parameter and access_token Cookie
    cvelistv5