CVE-2026-39915— TIM Flow < 26.0.6 CRLF Injection via rt Parameter
Quick assessment
Affected
TIM Solutions TIM Flow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
TIM Flow 版本低于 26.0.6 存在一个 CRLF（回车换行）注入漏洞。远程攻击者可以通过在 rt URL 参数和 access_token Cookie 中嵌入未经过滤的回车（CR）和换行（LF）序列，将任意 HTTP 响应头及响应体内容注入到 Set-Cookie 响应头中。攻击者可构造恶意请求，诱导已认证用户在浏览器环境中执行任意 JavaScript 代码，从而窃取会话令牌并篡改账户凭证。
Possible ATT&CK Techniques 3 AI
T1078 · Valid Accounts T1189 · Drive-by Compromise T1505.003 · Web Shell
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I. Basic Information for CVE-2026-39915
Vulnerability Information
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Vulnerability Title
TIM Flow < 26.0.6 CRLF Injection via rt Parameter
Source: CVE Program / CVE List V5
Vulnerability 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, 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP头部中CRLF序列转义处理不恰当(HTTP响应分割)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TIM Solutions | TIM Flow | 0 ~ 26.0.6 | - |
|
II. Public POCs for CVE-2026-39915
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-39915 (2)
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🔗 TIM Flow < 26.0.6 CRLF Injection via rt Parameter | Advisories | VulnCheck third-party-advisory
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IV. Related Vulnerabilities
Same weakness: CWE-113
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V. Comments for CVE-2026-39915
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