CVE-2019-25211 — Vulnerability in github.com/gin-contrib/cors —...

CRITICAL

Gin mishandles a wildcard at the end of an origin string

Published June 29, 2024Updated November 3, 2025Source: osv

Summary

parseWildcardRules in Gin-Gonic CORS middleware before 1.6.0 mishandles a wildcard at the end of an origin string, e.g., https://example.community/* is allowed when the intention is that only https://example.com/* should be allowed, and http://localhost.example.com/* is allowed when the intention is that only http://localhost/* should be allowed.

Advisory Timeline

First published June 29, 2024 (835 days ago).
Last revised November 3, 2025 — 493 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Update github.com/gin-contrib/cors to 1.6.0 or later

go get github.com/gin-contrib/cors@v1.6.0

Update github.com/gin-gonic/gin to 1.6.0 or later

go get github.com/gin-gonic/gin@v1.6.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: go (2).

Package	Ecosystem	Affected	Fixed In
github.com/gin-contrib/cors	go	All versions	1.6.0
github.com/gin-gonic/gin	go	All versions	1.6.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-346
Origin Validation ErrorMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.1 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

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

References

Frequently Asked Questions

What is CVE-2019-25211?: Gin mishandles a wildcard at the end of an origin string This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.1/10).
How do I check if my project is affected by CVE-2019-25211?: CVE-2019-25211 affects github.com/gin-contrib/cors and github.com/gin-gonic/gin. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-25211 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.1

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-869c-j7wc-8jqv

GO-2024-2955

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