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CVE-2025-59152— X-Forwarded-For Header Spoofing Bypasses Litestar Rate Limiting

Quick assessment

Affected
litestar-org litestar
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Litestar是Litestar开源的一个强大、灵活但固执己见的 ASGI 框架。 Litestar 2.17.0版本存在安全漏洞，该漏洞源于无条件信任X-Forwarded-For标头，可能导致绕过速率限制。

CVSS 7.5 · High EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2025-59152

Vulnerability Information
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Vulnerability Title
X-Forwarded-For Header Spoofing Bypasses Litestar Rate Limiting
Source: CVE Program / CVE List V5
Vulnerability Description
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. In version 2.17.0, rate limits can be completely bypassed by manipulating the X-Forwarded-For header. This renders IP-based rate limiting ineffective against determined attackers. Litestar's RateLimitMiddleware uses `cache_key_from_request()` to generate cache keys for rate limiting. When an X-Forwarded-For header is present, the middleware trusts it unconditionally and uses its value as part of the client identifier. Since clients can set arbitrary X-Forwarded-For values, each different spoofed IP creates a separate rate limit bucket. An attacker can rotate through different header values to avoid hitting any single bucket's limit. This affects any Litestar application using RateLimitMiddleware with default settings, which likely includes most applications that implement rate limiting. Version 2.18.0 contains a patch for the vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在安全决策中依赖未经信任的输入
Source: CVE Program / CVE List V5
Vulnerability Title
Litestar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Litestar是Litestar开源的一个强大、灵活但固执己见的 ASGI 框架。 Litestar 2.17.0版本存在安全漏洞，该漏洞源于无条件信任X-Forwarded-For标头，可能导致绕过速率限制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
litestar-org litestar = 2.17.0 -

II. Public POCs for CVE-2025-59152

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8194 chars
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III. Intelligence Information for CVE-2025-59152

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Vendor Advisories for CVE-2025-59152 (1)

IV. Related Vulnerabilities

Same product: litestar
Same vendor: litestar-org
Same weakness: CWE-807

V. Comments for CVE-2025-59152

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