GHSA-v84h-653v-4pq9

Source

https://github.com/advisories/GHSA-v84h-653v-4pq9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/05/GHSA-v84h-653v-4pq9/GHSA-v84h-653v-4pq9.json

Published

2024-05-03T17:34:21Z

Modified

2024-05-03T17:34:21Z

Summary

Some CORS middleware allow untrusted origins

Details

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.

References

• https://github.com/jub0bs/fcors/security/advisories/GHSA-v84h-653v-4pq9
• https://github.com/jub0bs/fcors/commit/08d85c149a418a583315cee066d4a35cc817219d
• https://github.com/jub0bs/fcors