# CVE-2026-39915

## Summary

- **CVE ID:** CVE-2026-39915
- **Severity:** HIGH
- **CVSS Score:** 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)
- **CWE:** CWE-113
- **Published:** Aug 24, 2026
- **Last Modified:** Aug 24, 2026

## Description

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.

## Affected Products

- TIM Solutions — TIM Flow (0)

## References

- [CNA](https://tim-doc.atlassian.net/wiki/spaces/eng/pages/230981636/Release+Notes)
- [CNA](https://www.vulncheck.com/advisories/tim-flow-crlf-injection-via-rt-parameter-and-access-token-cookie)
- [CNA](https://www.vulncheck.com/advisories/tim-flow-crlf-injection-via-rt-parameter)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 18.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._