---
title: "CVE-2019-25211: Gin mishandles a wildcard at the end of an origin string"
url: https://erroneo.us/security/cve/CVE-2019-25211/
description: "CVE-2019-25211 (github.com/gin-gonic/gin (Go)): parseWildcardRules in Gin-Gonic CORS middleware before 1.6.0 mishandles a wildcard at the end of an origin…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-06-28
date_modified: 2025-11-03
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2019-25211"
kev: false
cvss: 9.3
epss: 0.00431
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2019-25211: Gin mishandles a wildcard at the end of an origin string

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.4% , percentile 36: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 36% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes github.com/gin-gonic/gin (Go) < 1.6.0, fixed in 1.6.0 ; github.com/gin-contrib/cors (Go) < 1.6.0, fixed in 1.6.0 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- Go `github.com/gin-gonic/gin` < 1.6.0 → fixed: 1.6.0
- Go `github.com/gin-contrib/cors` < 1.6.0 → fixed: 1.6.0

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.43% probability of exploitation activity in the next 30 days; percentile 36.

## Sources

- [GitHub Advisory GHSA-869c-j7wc-8jqv](https://github.com/advisories/GHSA-869c-j7wc-8jqv)
- [CVE.org record CVE-2019-25211](https://www.cve.org/CVERecord?id=CVE-2019-25211)
- [NVD entry CVE-2019-25211](https://nvd.nist.gov/vuln/detail/CVE-2019-25211)
- [github.com](https://github.com/gin-contrib/cors/pull/57)
- [github.com](https://github.com/gin-contrib/cors/pull/106)
- [github.com](https://github.com/gin-contrib/cors/compare/v1.5.0...v1.6.0)
- [github.com](https://github.com/gin-contrib/cors/releases/tag/v1.6.0)
- [github.com](https://github.com/gin-contrib/cors/commit/27b723a473efd80d5a498fa9f5933c80204c850d)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2025/08/msg00024.html)

---
Source page: https://erroneo.us/security/cve/CVE-2019-25211/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt