CVE-2025-71405
go-chi chi before v5.2.2 Open Redirect via RedirectSlashes
Description
chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft.
INFO
Published Date :
Aug. 14, 2026, 12:16 p.m.
Last Modified :
Oct. 8, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the chi library to version 5.2.2 or later.
- Validate and sanitize the Host header input.
- Implement stricter redirect URL validation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-71405.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-71405 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-71405
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-71405 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-71405 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 08, 2026
Action Type Old Value New Value Added Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 Removed Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 -
CVE Modified by [email protected]
Oct. 08, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/71xxx/CVE-2025-71405.json">CVE-2025-71405</a> Added Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 Added Reference https://www.vulncheck.com/advisories/go-chi-chi-before-open-redirect-via-redirectslashes Removed Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 Removed Reference https://www.vulncheck.com/advisories/go-chi-chi-before-open-redirect-via-redirectslashes -
CVE Translated by [email protected]
Sep. 29, 2026
Action Type Old Value New Value Added Translation Title: chi de go-chi, Description: Las versiones de chi anteriores a la v5.2.2 contienen una vulnerabilidad de redirección abierta en la función de middleware RedirectSlashes que utiliza el encabezado Host para construir URLs de redirección. Los atacantes pueden manipular el encabezado Host para redirigir a los usuarios a hosts arbitrarios, lo que permite ataques de phishing y robo de credenciales. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 14, 2026
Action Type Old Value New Value Added Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 Added SSVC {'id': 'CVE-2025-71405', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-14T18:57:32.118107Z'} -
New CVE Received by [email protected]
Aug. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'go-chi', 'product': 'chi', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.2.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.2.2', 'versionType': 'semver'}], 'packageURL': 'pkg:golang/chi', 'defaultStatus': 'unaffected'}] Added Description chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-601 Added Reference https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 Added Reference https://www.vulncheck.com/advisories/go-chi-chi-before-open-redirect-via-redirectslashes