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 and access_token cookie, which are 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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.5
- CVSS vector
- 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 probability
- 0.27%
- CWE
- CWE-113
- Published
- 2026-08-24
- Last modified
- 2026-08-24
Affected products
- TIM Solutions TIM Flow
Weakness type
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- CVE-2025-62826 — An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')...