What’s Vulnerable › Vulnerabilities

CVE-2024-27302: Authorization Bypass Through User-Controlled Key in go-zero

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-03-06 · updated 2026-06-17
• Weakness: CWE-639

Description

go-zero is a web and rpc framework. Go-zero allows user to specify a CORS Filter with a configurable allows param - which is an array of domains allowed in CORS policy. However, the `isOriginAllowed` uses `strings.HasSuffix` to check the origin, which leads to bypass via a malicious domain. This vulnerability is capable of breaking CORS policy and thus allowing any page to make requests and/or retrieve data on behalf of other users. Version 1.4.4 fixes this issue.

Affected products

• zeromicro go-zero: before 1.4.4 — fixed in 1.4.4

How to fix

Upgrade to a fixed version: zeromicro go-zero 1.4.4. Check the vendor advisory for mitigations.

References

• https://github.com/zeromicro/go-zero/commit/d9d79e930dff6218a873f4f02115df61c38b15db
• https://github.com/zeromicro/go-zero/security/advisories/GHSA-fgxv-gw55-r5fq
• https://github.com/zeromicro/go-zero/commit/d9d79e930dff6218a873f4f02115df61c38b15db
• https://github.com/zeromicro/go-zero/security/advisories/GHSA-fgxv-gw55-r5fq

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