CVE-2026-122132— go-chi chi 5.2.2 through 5.5.0 Open Redirect via RedirectSlashes Middleware

Quick assessment

Affected

go-chi chi

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.

go-chi 库的 5.2.2 至 5.5.0 版本中，中间件存在一个开放重定向漏洞。攻击者可以在请求路径中嵌入制表符（Tab 字符），从而将受害者重定向到外部主机。攻击者可构造包含 URL 编码制表符的链接；浏览器在处理 301 重定向响应时，会剥离头中的制表符，并将其解析为协议相对 URL（protocol-relative URL），从而绕过针对 CVE-2025-69725 的修复措施。

CVSS 6.1 · Medium Updated Nov 05, 2026

Possible ATT&CK Techniques 2 AI

T1566.002 · Spearphishing Link T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

go-chi chi 5.2.2 through 5.5.0 Open Redirect via RedirectSlashes Middleware

Source: CVE Program / CVE List V5

Vulnerability Description

go-chi chi 5.2.2 through 5.5.0 contains an open redirect vulnerability in the RedirectSlashes middleware that allows attackers to redirect victims to external hosts by embedding tab characters in request paths. Attackers can craft links with a URL-encoded tab, which browsers strip from the 301 Location header and resolve as a protocol-relative URL, bypassing the fix for CVE-2025-69725.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

指向未可信站点的URL重定向(开放重定向)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
go-chi	chi	5.2.2 ~ 5.5.0	-

II. Public POCs for CVE-2026-122132

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-122132

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Other References for CVE-2026-122132 (4)

https://github.com/go-chi/chi/blob/v5.5.0/middleware/strip.go#L41-L69 technical-description
https://github.com/go-chi/chi product
https://github.com/go-chi/chi/pull/1238 issue-tracking patch
https://www.vulncheck.com/advisories/go-chi-chi-5.2.2-through-5.5.0-open-redirect-via-redirectslashes-middleware third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-122132

IV. Related Vulnerabilities

Same product: chi

Same vendor: go-chi

Same weakness: CWE-601