GHSA-v84h-653v-4pq9 – github.com/jub0bs/fcors

Package

Manager: go
Name: github.com/jub0bs/fcors
Vulnerable Version: >=0 <0.9.0

Severity

Level: Critical

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Some CORS middleware allow untrusted origins ### Impact Some CORS middleware (more specifically those created by specifying two or more origin patterns whose hosts share a proper suffix) incorrectly allow some untrusted origins, thereby opening the door to cross-origin attacks from the untrusted origins in question. For example, specifying origin patterns `https://foo.com` and `https://bar.com` (in that order) would yield a middleware that would incorrectly allow untrusted origin `https://barfoo.com`. ### Patches Patched in v0.9.0. ### Workarounds None.

Metadata

Created: 2024-05-03T17:34:21Z
Modified: 2024-05-21T15:39:20Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/05/GHSA-v84h-653v-4pq9/GHSA-v84h-653v-4pq9.json
CWE IDs: []
Alternative ID: N/A
Finding: F184
Auto approve: 1